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 A270669 #7 Mar 21 2016 09:14:16
%S A270669 1,1,4,31,168,1841,19320,226885,2655408,47569681,743996880,
%T A270669 12582916061,245804712120,4831304993113,109782586920552,
%U A270669 2669560767444901,61579705719702240,1566459883903878305,44585240861695115808,1212424119941953292461,37517727808419084095400
%N A270669 E.g.f.: Product_{k>=1} (1 + sinh(k*x^k)).
%H A270669 Vaclav Kotesovec, <a href="/A270669/b270669.txt">Table of n, a(n) for n = 0..430</a>
%t A270669 nn = 25; Range[0, nn]! * CoefficientList[Series[Product[1+Sinh[k*x^k], {k, 1, nn}], {x, 0, nn}], x]
%Y A270669 Cf. A082579, A130220, A130263, A255807, A270294, A270670.
%K A270669 nonn
%O A270669 0,3
%A A270669 _Vaclav Kotesovec_, Mar 21 2016