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 A161981 #3 Mar 30 2012 18:52:33 %S A161981 0,1,0,0,0,5,5,6,2,2,0,3,10,10,3,7,10,16,2,10,4,1,17,22,1,20,24,21,11, %T A161981 23,28,31,30,4,16,14,18,3,4,26,29,9,42,8,15,5,29,43,38,18,32,32,22,1, %U A161981 3,3,28,21,32,51,30,46,39,19,52,16,30,1,2,68,65,70,57,73,42,1,21,25,44,72,17,71 %N A161981 A006128(n) mod n. %C A161981 The remainder of (the total number of parts in all partitions of n) mod n. %e A161981 a(1)=0=1 mod 1. a(2)=1=3 mod 2. a(3)=0=6 mod 3. a(4)=0=12 mod 4. a(5)=0=20 mod 5. a(6)=5=35 mod 6. %Y A161981 Cf. A000041, A006128, A076276. %K A161981 nonn %O A161981 1,6 %A A161981 _Juri-Stepan Gerasimov_, Jun 23 2009 %E A161981 Edited, a 3 inserted, and extended by _R. J. Mathar_, Aug 02 2009