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 A255410 #10 Feb 22 2015 23:30:03 %S A255410 2,9,35,85,203,325,547,911,1181,1591,2347,2923,3421,4151,5161,6461, %T A255410 7693,8785,10237,11789,13469,14621,16523,19225,21775,23669,25237, %U A255410 27715,29891,34073,36977,40487,43151,48091,50429,53407,55843,61541,68797,71603,77279,80291,84091,88771,91997,96119,101927,108833,115031,123187 %N A255410 Main diagonal of Ludic array A255127 (and A255129): a(n) = A255127(n,n). %H A255410 Antti Karttunen, <a href="/A255410/b255410.txt">Table of n, a(n) for n = 1..1024</a> %F A255410 a(n) = A255127(n,n). %F A255410 a(n) = A255407(A083141(n)). %o A255410 (Scheme) (define (A255410 n) (A255127bi n n)) ;; Code for A255127bi given in A255127. %Y A255410 Cf. A083141, A255127, A255129, A255407. %K A255410 nonn %O A255410 1,1 %A A255410 _Antti Karttunen_, Feb 22 2015