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 A176661 #2 Mar 30 2012 18:40:52 %S A176661 0,3,15,36,88,145,236,357,493,704,896,1122,1531,1862,2229,2635,3146, %T A176661 3653,4539,5176,5948,6669,7540,8492,9594,10660,11887,13079,14720, %U A176661 16341,17737,19118,20619,22351,24143,26070,28012,30413,33024,35575,37997 %N A176661 Partial sums of A061262. %C A176661 Partial sums of smallest number representable as the sum of 3 triangular numbers in exactly n ways. The subsequence of triangular numbers in the partial sum begins: 3, 15, 36. The subsequence of primes in the partial sum begins: 3, 1531, 11887, 17737, 37997, 43441. %F A176661 a(n) = SUM[i=0..n] A061262(i). %e A176661 a(13) = 0 + 3 + 12 + 21 + 52 + 57 + 91 + 121 + 136 + 211 + 192 + 226 + 409 = 1531 is prime. %Y A176661 Cf. A061262, A000217, A053614, A060773, A002636, A124978. %K A176661 nonn %O A176661 0,2 %A A176661 _Jonathan Vos Post_, Apr 23 2010