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 A160647 #10 Dec 10 2016 10:33:15 %S A160647 1,2,5,10,20,36,65,108,179,284,445,676,1017,1492,2168,3094,4372,6088, %T A160647 8406,11462,15509,20770,27614,36390,47646,61898,79939,102538,130808, %U A160647 165864,209272,262598,328008,407700,504607,621760,763123,932788,1136047 %N A160647 Self-convolution of sequence A001402. %e A160647 a(8) = 108 because the eighth antidiagonal of the associated array is 14 11 14 15 15 14 11 14 and sums to 108. %p A160647 A160647 := proc(n) coeftayl( convert(1/mul((1-x^j)^2,j=1..6),parfrac,x),x=0,n) ; end: seq(A160647(n),n=0..45) ; # _R. J. Mathar_, Jun 16 2009 %Y A160647 Cf. A117566. %Y A160647 Sixth in a list of sequences related to numeric partitions; earlier sequences are A000027, A006918, A117485, A117486, and A117487. %K A160647 easy,nonn %O A160647 1,2 %A A160647 _Alford Arnold_, May 27 2009 %E A160647 More terms from _R. J. Mathar_, Jun 16 2009