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 A055378 #4 Mar 30 2012 18:51:26 %S A055378 2,1,2,0,2,2,1,2,3,2,0,2,4,4,2,0,2,5,6,5,2,1,2,6,10,8,6,2,0,2,8,12,17, %T A055378 10,7,2,0,2,9,18,20,26,12,8,2,0,2,10,28,32,30,37,14,9,2,1,2,12,30,65, %U A055378 50,42,50,16,10,2,0,2,16,36,68,126,72,56,65,18,11,2,0,2,17,54,80,130 %N A055378 Table read by antidiagonals: T(n,k) = n^trinv(k)+n^(k-((trinv(k)*(trinv(k)-1))/2)) where trinv (k) = floor((1+sqrt(1+8*k))/2) and with 0^0 = 1. %F A055378 T(n, k) = n^A025581(k)+n^A002262(k) %e A055378 a(50) = T(5,4) = 5^2+5^1 = 30 %Y A055378 Rows include A010054 (apart from initial term), A007395 and A048645 (offset). Subsequent rows are sums of two powers of a given number and also rewritings of A052216 from a particular base to base 10. Columns include A007395, A000027, A005843, A002522, A002378, A001105, A001093, A034262, A011379, A033431, A002523. %K A055378 nonn,tabl %O A055378 0,1 %A A055378 _Henry Bottomley_, Jun 22 2000