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 A180261 #7 Feb 12 2018 16:33:40 %S A180261 1,60,207360,2407897497600,318060088262309047173120000, %T A180261 5462759866253102351440025387291465047015528857600000000 %N A180261 a(n) = A088679(n) / 48. %K A180261 easy,nonn %O A180261 4,2 %A A180261 _Giovanni Teofilatto_, Aug 28 2010 %E A180261 Edited by _N. J. A. Sloane_, Aug 28 2010 %E A180261 Offset corrected - _R. J. Mathar_, Oct 12 2010