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 A113884 #5 Jul 10 2015 19:55:07 %S A113884 0,2,3,7,13,29,59,113,223,439,877,1721,3389,6653,13093,25741,50599, %T A113884 99487,195581,384509,755959 %N A113884 Pentanacci analog of A055502. %C A113884 This is to the pentanacci sequence as A055502 is to the Fibonacci sequence and A113823 is to the tribonacci sequence (i.e., least prime greater than the sum of the previous 2 terms in A055502, least prime greater than the sum of the previous 3 terms in A113823, least prime greater than the sum of the previous 5 terms in this sequence). %F A113884 a(-n) = a(0) = 0, a(1) = 2, for n>1: a(n) = smallest prime > a(n-1)+a(n-2)+a(n-3)+a(n-4)+a(n-5). %e A113884 a(6) = 59 because a(1)+a(2)+a(3)+a(4)+a(5) = 2+3+7+13+29 = 54, the smallest prime beyond 54 is 59. %e A113884 a(10) = 877 because a(5)+a(6)+a(7)+a(8)+a(9) = 29 + 59 + 113 + 223 + 439 = 863 is prime, the next prime being 14 more, namely 877. %Y A113884 Cf. A055502, A113823. %K A113884 easy,nonn %O A113884 0,2 %A A113884 _Jonathan Vos Post_, Jan 27 2006