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 A319202 #11 Nov 14 2018 01:12:20
%S A319202 1,0,1,1,-1,-3,0,10,10,-28,-70,42,348,198,-1353,-2431,3575,15587,702,
%T A319202 -74698,-89726,264214,753236,-441864,-4308174,-2823020,18594787,
%U A319202 36373695,-52468405,-249712725,-24858975,1267523445,1639209195,-4671244455,-14174703810
%N A319202 a(n) is the A-sequence for the Riordan matrix R = (1/(1- x^2 - x^3), x/(1 - x^2 - x^3)) from A104578.
%C A319202 See the comment in A319201, and the recurrence formula for A104578 from the A- and Z-sequences.
%C A319202 The Z-sequence for R is given by a(n+1), n >= 0.
%F A319202 a(n) = [t^n] (1/f(t)), where f(t) = F^{[-1]}(t)/t, with the compositional inverse F^{[-1]}(t) of F(x) = 1/(1 - x^2 - x^3). The expansion of f is given in A319201.
%Y A319202 Cf. A104578, A319201.
%K A319202 sign
%O A319202 0,6
%A A319202 _Wolfdieter Lang_, Oct 29 2018