[seqfan] Re primes with negative value
N. J. A. Sloane
njas at research.att.com
Tue Apr 13 22:58:35 CEST 2010
Zak, Thanks for this message:
But we have several "negative primes" in OEIS:
A088005 Numbers whose abundance is either a positive or a negative prime number.
A125211 a(n) = total number of positive and negative primes of the form k! - n.
A125212 a(n) = numbers n such that no positive and no negative prime exists of the form k! - n; or A125211(n) = 0.
A088006 Abundance values which are either positive or negative prime numbers.
A002143 (see rf. ET Ordman)
A125236 (see %e )
A103807 Primes p such that p, 2p+/-27 and 2p+/-33 are all primes. (my sequence ?!)
Me: i have cleaned up these entries to remove
any mention of negative primes.
Best regards
Neil
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