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 A075495 #12 Jun 17 2023 07:51:43
%S A075495 1,1,-6,4,7,-15,8,12,-31,29,10,-72,95,-11,-160,264,-111,-311,682,-484,
%T A075495 -505,1673,-1656,-524,3857,-4987,602,8240,-13825,6189,15872,-35888,
%U A075495 26209,25553,-87654,88308,24903,-200863,264264,-38500,-426623,729389,-341270,-814744,1885407,-1411931,-1288224
%N A075495 Convolution of A075298 with A056594.
%H A075495 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (-1, -2, 0, -1, 1).
%F A075495 a(n) = -a(n-1) - 2a(n-2) - a(n-4) + a(n-5); a(0)=1, a(1)=1, a(2)=-6, a(3)=4, a(4)=7.
%F A075495 G.f.: (1 + 2x - 3x^2)/(1 + x + 2x^2 + x^4 - x^5).
%t A075495 CoefficientList[Series[(1 + 2x - 3x^2)/(1 + x + 2x^2 + x^4 - x^5), {x, 0, 50}], x]
%Y A075495 Cf. A075298, A075419, A056594.
%K A075495 easy,sign
%O A075495 0,3
%A A075495 Mario Catalani (mario.catalani(AT)unito.it), Sep 19 2002