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Revision History for A154631 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

newer changes | Showing entries 11-20 | older changes
Triangle read by rows: T(m,n) = 2mn + m + n + 5.
(history; published version)
#34 by Bruno Berselli at Mon Nov 19 18:15:19 EST 2012
STATUS

editing

approved

#33 by Bruno Berselli at Mon Nov 19 18:15:14 EST 2012
DATA

9, 12, 17, 15, 22, 29, 18, 27, 36, 45, 21, 32, 43, 54, 65, 24, 37, 50, 63, 76, 89, 27, 42, 57, 72, 87, 102, 117, 30, 47, 64, 81, 98, 115, 132, 149, 33, 52, 71, 90, 109, 128, 147, 166, 185, 36, 57, 78, 99, 120, 141, 162, 183, 204, 225, 39, 62, 85, 108, 131, 154, 177, 200

COMMENTS

If h>5 does not belong to the sequence, then 2*h - 9 is prime. - Vincenzo Librandi, Nov 17 2012

STATUS

approved

editing

Discussion
Mon Nov 19
18:15
Bruno Berselli: Comment removed:  it is obvious ---
#32 by Joerg Arndt at Sun Nov 18 12:47:13 EST 2012
STATUS

reviewed

approved

#31 by Michael B. Porter at Sat Nov 17 21:14:06 EST 2012
STATUS

proposed

reviewed

#30 by Vincenzo Librandi at Sat Nov 17 15:36:00 EST 2012
STATUS

editing

proposed

#29 by Vincenzo Librandi at Sat Nov 17 15:35:32 EST 2012
DATA

9, 12, 17, 15, 22, 29, 18, 27, 36, 45, 21, 32, 43, 54, 65, 24, 37, 50, 63, 76, 89, 27, 42, 57, 72, 87, 102, 117, 30, 47, 64, 81, 98, 115, 132, 149, 33, 52, 71, 90, 109, 128, 147, 166, 185, 36, 57, 78, 99, 120, 141, 162, 183, 204, 225, 39, 62, 85, 108, 131, 154, 177, 200

COMMENTS

If h>5 does not belong to the sequence, then 2*h - 9 is prime. - Vincenzo Librandi, Nov 17 2012

STATUS

approved

editing

#28 by Bruno Berselli at Fri Aug 31 17:16:18 EDT 2012
STATUS

editing

approved

#27 by Bruno Berselli at Fri Aug 31 17:16:13 EDT 2012
COMMENTS

Subsequence of A153044, since, obviously, is 2*(2*r*s+r+s+5)-9 = (2*r+1)*(2*s+1). - Vincenzo Librandi, Aug 30 2012

All terms are in A153044. - Vincenzo Librandi, Aug 30 2012

STATUS

approved

editing

#26 by Bruno Berselli at Fri Aug 31 11:28:32 EDT 2012
STATUS

editing

approved

#25 by Bruno Berselli at Fri Aug 31 11:28:29 EDT 2012
EXAMPLE

21, 32, 43 , 54, 65;

STATUS

approved

editing