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A195987 Primes p=6k+1 such that p^2 | n^n+(n+1)^(n+1) for some n=4 (mod 6) but not p | n^2+n+1. 2
907, 1039, 1093, 1231, 1303, 1531, 1993, 2377, 2647, 2713, 2731, 3001, 3331, 4003, 4177, 4243, 4339, 4447 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
D. Broadhurst, Re: Square factors of n^n+(n+1)^(n+1) [starting with 907^2], on yahoo group "primenumbers", Oct 12 2011
David Broadhurst and others, Square factors of n^n+(n+1)^(n+1) [starting with 907^2], digest of 81 messages in primenumbers Yahoo group, Oct 12 - Nov 29, 2011.
CROSSREFS
Sequence in context: A006917 A174862 A350852 * A216468 A031939 A253228
KEYWORD
nonn,more
AUTHOR
M. F. Hasler, Oct 12 2011
STATUS
approved

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)