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 A007762 #22 Nov 19 2021 02:47:58 %S A007762 1,8,120,2288,49680,1170968,29206632,759265760,20371816992, %T A007762 560386232744 %N A007762 Number of domino tilings of a certain region. %H A007762 Jon Maiga, <a href="http://sequencedb.net/s/A007762">Computer-generated formulas for A007762</a>, Sequence Machine. %H A007762 <a href="/index/Do#domino">Index entries for sequences related to dominoes</a> %F A007762 a(n) = A006318(n-1) * A104550(n) for all known terms [discovered by Sequence Machine]. - _Andrey Zabolotskiy_, Oct 12 2021 %K A007762 nonn,unkn,more %O A007762 1,2 %A A007762 _James Propp_