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Revision History for A003015 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

Showing entries 1-10 | older changes
Numbers that occur 5 or more times in Pascal's triangle.
(history; published version)
#83 by Joerg Arndt at Thu Aug 01 05:34:51 EDT 2024
STATUS

reviewed

approved

#82 by Michel Marcus at Thu Aug 01 04:47:55 EDT 2024
STATUS

proposed

reviewed

#81 by Jason Yuen at Thu Aug 01 03:08:33 EDT 2024
STATUS

editing

proposed

Discussion
Thu Aug 01
03:09
Jason Yuen: 61218182743304701891431482520 was confirmed later, see the comment from Nov 15 2004.
03:09
Michel Marcus: simply ?  The first of these is ....   ??
04:47
Michel Marcus: ah yes
#80 by Jason Yuen at Thu Aug 01 03:08:30 EDT 2024
COMMENTS

The subject of a recent thread on sci.math. Apparently it has been known for many years that there are infinitely many numbers that occur at least 6 times in Pascal's triangle, namely the solutions to binomial(n,m-1) = binomial(n-1,m) given by n = F_{2k}*F_{2k+1}; m = F_{2k-1}*F_{2k} where F_i is the i-th Fibonacci number. The first of these outside the range of the existing database entry is {104 choose 39} = {103 choose 40} = 61218182743304701891431482520. - Christopher E. Thompson, Mar 09 2001

STATUS

reviewed

editing

#79 by Joerg Arndt at Thu Aug 01 02:56:59 EDT 2024
STATUS

proposed

reviewed

Discussion
Thu Aug 01
03:00
Michel Marcus: F_{2k}F_{2k+1}: rather F_{2k}*F_{2k+1} ?
03:00
Michel Marcus: The first of these outside the range of the existing database entry ?   it is in data section  ?!
#78 by Jason Yuen at Thu Aug 01 02:48:09 EDT 2024
STATUS

editing

proposed

#77 by Jason Yuen at Thu Aug 01 02:48:02 EDT 2024
COMMENTS

The subject of a recent thread on sci.math. Apparently it has been known for many years that there are infinitely many numbers that occur at least 6 times in Pascal's triangle, namely the solutions to binomial(n,m-1) = binomial{(n-1,m) given by n = F_{2k}F_{2k+1}; m = F_{2k-1}F_{2k} where F_i is the i-th Fibonacci number. The first of these outside the range of the existing database entry is {104 choose 39} = {103 choose 40} = 61218182743304701891431482520. - Christopher E. Thompson, Mar 09 2001

STATUS

approved

editing

#76 by Alois P. Heinz at Fri May 03 14:24:47 EDT 2024
STATUS

proposed

approved

#75 by Hans Montanus at Fri May 03 13:26:45 EDT 2024
STATUS

editing

proposed

#74 by Hans Montanus at Fri Apr 26 05:53:20 EDT 2024
LINKS

Hans Montanus and Ron Westdijk, <a href="https://matharoundtheblockgreenbluemath.eunl/wp-content/uploads/2024/03/?page_id=125Cellular-Automation-and-Binomials.pdf">Cellular Automation and Binomials</a>, Math around the Block Green Blue Mathematics (2022), p. 69.

STATUS

approved

editing

Discussion
Fri May 03
06:14
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