The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A074349 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing entries 1-10 | older changes

A074349

a(1)=1, a(n) is smallest number > a(n-1) such that all pair juxtapositions a(1)a(n),...,a(n-1)a(n) are primes.
(history; published version)

#13 by Alois P. Heinz at Mon Jul 29 07:43:12 EDT 2024

STATUS

proposed

approved

#12 by Michael S. Branicky at Mon Jul 29 07:41:29 EDT 2024

STATUS

editing

proposed

#11 by Michael S. Branicky at Mon Jul 29 07:41:27 EDT 2024

DATA

1, 3, 7, 97, 187, 1699, 190699, 9014587, 15840271, 424390927, 7945288741

EXTENSIONS

a(11) from Michael S. Branicky, Jul 29 2024

STATUS

approved

editing

#10 by N. J. A. Sloane at Sun Jul 28 16:48:55 EDT 2024

STATUS

editing

approved

#9 by N. J. A. Sloane at Sun Jul 28 16:48:52 EDT 2024

KEYWORD

nonn,base,changed,more

STATUS

proposed

editing

#8 by Bill McEachen at Sun Jul 28 16:47:40 EDT 2024

STATUS

editing

proposed

#7 by Bill McEachen at Sun Jul 28 16:45:48 EDT 2024

EXTENSIONS

a(8)-a(10) from Bill McEachen, Jul 28 2024

#6 by Bill McEachen at Sun Jul 28 16:45:28 EDT 2024

DATA

1, 3, 7, 97, 187, 1699, 190699, 9014587, 15840271, 424390927

STATUS

approved

editing

#5 by Russ Cox at Fri Mar 30 17:26:02 EDT 2012

AUTHOR

_Zak Seidov (zakseidov(AT)yahoo.com), _, Sep 23 2002

Discussion

Fri Mar 30

17:26

OEIS Server: https://oeis.org/edit/global/139

#4 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009

EXAMPLE

all 21 pair mergers: {13, 17, 197, 1187, 11699, 1190699}, {37, 397, 3187, 31699, 3190699}, {797, 7187, 71699, 7190699}, {97187, 971699, 97190699}, {1871699, 187190699}, and 1699190699 are primes.

KEYWORD

nonn,base,new