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 A176660 #2 Mar 30 2012 18:40:52 %S A176660 23,50,79,113,150,188,231,277,324,373,426,480,536,593,651,710,777,845, %T A176660 914,987,1061,1137,1215,1294,1377,1463,1550,1639,1733,1830,1928,2131, %U A176660 2338,2547,2770,2997,3226,3459,3698,3945,4194,4447,4704,4963,5226,5493 %N A176660 Partial sums of A038772. %C A176660 Partial sums of numbers not divisible by any of their digits. The partial sums of the complement (A038770, numbers divisible by at least one of their digits) is A176659. Hence the sum of the two partial sums (properly offset) is triangular numbers A000217. The subsequence of primes in the partial sum begins: 23, 79, 113, 277, 373, 593, 1061, 1733, 2131, 4447, 9479. The smallest square in the sequence is 324. %F A176660 a(n) = SUM[i=1..n] A038772(i). %e A176660 a(4) = 23 + 27 + 29 + 34 = 113 is prime. %Y A176660 Cf. A038772, 034709, A034837, A038769, A038770, A176659. %K A176660 base,easy,nonn %O A176660 1,1 %A A176660 _Jonathan Vos Post_, Apr 23 2010