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 A165641 #3 Mar 30 2012 18:52:03 %S A165641 1,1,6,6,360,360,15120,15120,1814400,1814400,119750400,119750400, %T A165641 653837184000,653837184000,3923023104000,3923023104000, %U A165641 16005934264320000,16005934264320000,12772735542927360000,12772735542927360000,8430005458332057600000,8430005458332057600000 %N A165641 A091137(n) / A001316(n) . %Y A165641 Cf. A165636, A036281, A002445. %K A165641 nonn %O A165641 0,3 %A A165641 _Paul Curtz_, Sep 23 2009 %E A165641 Edited and extended by _R. J. Mathar_, Sep 25 2009