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 A134796 #3 Mar 30 2012 17:33:50 %S A134796 2,612,203042,567290110,132156182210240,272306342380420462, %T A134796 506552600650702756812,87093099210561122119012601332, %U A134796 140614821560164017221806189219802070 %N A134796 Concatenation of next n positive oblong numbers. %C A134796 Oblong numbers are also called promic, pronic or heteromecic (numbers). %Y A134796 Cf. A053067, A133013. Oblong numbers: A002378. %K A134796 base,easy,nonn %O A134796 1,1 %A A134796 _Omar E. Pol_, Nov 26 2007