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 A176074 #2 Mar 30 2012 18:40:52 %S A176074 1,1,2,3,7,17,51,163,561,2004,7391,27873,107050,417152,1645339, %T A176074 6555752,26348334,106691779,434851380,1782551286,7344326285, %U A176074 30397197514,126324028956,526911437207,2205163133586,9256931835831,38967696710845 %N A176074 Partial sums of A006343. %C A176074 Partial sums of Arkons: number of elementary maps with n-1 nodes. The subsequence of primes in the partial sum begins: 2, 3, 7, 17, 163, no more through a(26). %F A176074 a(n) = SUM[i=0..n] A006343(i) = SUM[i=0..n]. %e A176074 a(7) = 1 + 0 + 1 + 1 + 4 + 10 + 34 + 112 = 163 is prime. %Y A176074 Cf. A006343, A000934. %K A176074 easy,nonn %O A176074 0,3 %A A176074 _Jonathan Vos Post_, Apr 07 2010