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 A027315 #8 Oct 27 2019 19:55:45 %S A027315 1,2,6,20,90,692,5774,48924,417440,3580036,30831756,266463804, %T A027315 2309848194,20074999500,174867895438,1526259877412,13344806416950, %U A027315 116863477094660,1024844657752730,8998915251701628,79108591391227406,696167664755023388,6132277201334483178 %N A027315 Self-convolution of array T given by A026082. %C A027315 Equivalently, sum of squares of numbers in row n of array T given by A026082. %K A027315 nonn %O A027315 0,2 %A A027315 _Clark Kimberling_ %E A027315 More terms from _Sean A. Irvine_, Oct 27 2019