This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A165981 #10 Sep 13 2013 05:13:27 %S A165981 17,43,61,73,271,313,331,373,397,409,521,691,733,751,773,859,1051, %T A165981 1063,1153,1171,1231,1459,1613,1669,1759,1823,1933,2053,2131,2473, %U A165981 2551,2707,2843,2917,2953,2999,3163,3221,3331,3371,3469,3517,3541,3583,3671,3719 %N A165981 Primes p which are equal to 2 plus the sum of three consecutive primes. %H A165981 Vincenzo Librandi, <a href="/A165981/b165981.txt">Table of n, a(n) for n = 1..1000</a> %e A165981 17 is in the sequence because 2+3+5+7=17; 43=2+11+13+17; 271=2+83+89+97. %t A165981 Select[Total[#] + 2 & / @Partition[Prime[Range[200]], 3, 1], PrimeQ] (* _Vincenzo Librandi_, Sep 13 2013 *) %Y A165981 Cf. A034961. [_R. J. Mathar_, Oct 14 2009] %K A165981 nonn,easy %O A165981 1,1 %A A165981 _Vincenzo Librandi_, Oct 03 2009 %E A165981 Edited by _N. J. A. Sloane_, Oct 04 2009 %E A165981 Terms from 313 to 773 inserted by _R. J. Mathar_, Oct 14 2009