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A073475
Rearrangement of factorial numbers such that a(k) + a(k+1) - 1 is a prime for all k.
0
1, 2, 6, 24, 720, 120
OFFSET
1,2
COMMENTS
The sequence is full because the next term would be divisible by 7 (the other factorials are already used), but 120+7x-1 is divisible by 7 and so cannot be a prime. - Sascha Kurz, Feb 01 2003
CROSSREFS
Cf. A000142.
Sequence in context: A324141 A277423 A191460 * A061774 A110729 A088258
KEYWORD
fini,full,nonn
AUTHOR
Jason Earls, Aug 26 2002
STATUS
approved