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 A115653 #2 Mar 30 2012 17:40:35 %S A115653 2,3,5,11,13,17,19,23,29,53,59,61,67,71,73,107,109,113,131,157,163, %T A115653 167,173,179,181,389,397,401,409,433,443,449,457,461,491,499,503,509, %U A115653 541,547,557,563,947,953,971,997,1009,1013,1019,1021,1051,1061,1063 %N A115653 Prime numbers which are the sum of distinct double factorials (A006882). %C A115653 Double factorials 0!! and 1!! are not considered distinct. Note that double factorial (n!!) is different from (n!)!. %e A115653 947 is prime and 947 = 9!! + 2!!. %Y A115653 Cf. A006882, A115651, A115652, A115654. %K A115653 nonn %O A115653 1,1 %A A115653 _Giovanni Resta_, Jan 28 2006