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 A159190 #2 Mar 30 2012 18:40:49 %S A159190 6,9,1247,1891,29539 %N A159190 Main diagonal of array mentioned in A113941. %C A159190 Main diagonal of array of k-gonal numbers which are also brilliant numbers. %F A159190 A(k,n) = n-th brilliant number A078972 among (n+2)-gonal numbers. %e A159190 The array begins: %e A159190 ============================================= %e A159190 ....|.n=1.|.n=2.|.n=3.|..n=4.|..n=5.|in OEIS.| %e A159190 ============================================= %e A159190 k=3.|...6.|..10.|...15.|...21.|....253.|A113940 %e A159190 k=4.|...4.|...9.|...25.|...49.|....121.|A001248 %e A159190 k=5.|..35.|.247.|.1247.|..2501.|..4187.|A113941 %e A159190 k=6.|...6.|..15.|..703.|..1891.|..2701.|new %e A159190 k=7.|.403.|.697.|.2059.|.25351.|.29539.|new %e A159190 ============================================= %Y A159190 Cf. A001248, A078972, A113940, A113941. %K A159190 base,easy,nonn %O A159190 1,1 %A A159190 _Jonathan Vos Post_, Apr 05 2009