%I #19 Mar 28 2017 14:42:03
%S 2,3,5,7,11,13,17,19,29,31,41,43,59,61,71,73,101,103,107,109,137,139,
%T 149,151,179,181,191,193,197,199,227,229,239,241,269,271,281,283,311,
%U 313,347,349,419,421,431,433,461,463,521,523,569,571,599,601,617,619,641
%N 2 together with twin primes.
%C Primes of the form p-1, p-2 and p+2 for p prime. - _Juri-Stepan Gerasimov_, Apr 30 2010
%C Numbers n such that A283265(n) = 0. - _Mats Granvik_, Mar 18 2017
%H Michael De Vlieger, <a href="/A171821/b171821.txt">Table of n, a(n) for n = 1..10000</a>
%t Union@ Flatten@ Select[Partition[#, 2, 1] &@ Prime@ Range@ 117, First@ Differences@ # <= 2 &] (* _Michael De Vlieger_, Mar 18 2017 *)
%Y Cf. A001097(twin primes), A283265.
%K nonn
%O 1,1
%A _Juri-Stepan Gerasimov_, Dec 19 2009
%E Entries checked by _D. S. McNeil_, Nov 26 2010
|