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 A164662 #8 Mar 06 2021 01:32:07
%S A164662 1,1,1,-2,1,8,-11,-41,-127,107,-639,-1372,-3695,514,-25983,-26339,
%T A164662 -70655,-46299,-430955,-484134,-2808479,93148,-5032895,-17319181,
%U A164662 -72165695,43371103,-171203135,-378398576,-148383647,-2605023034,-3368133419,11479942073,-11902375935,2021161097,-708801692671
%N A164662 Row sums of triangle A164658 (numerators of coefficients from Integral_{x} T(n,x), with T(n,x) Chebyshev polynomials of the first kind).
%C A164662 The row sums of the rational triangle A164658/A164659 give A164660/A164661.
%H A164662 <a href="/index/Ch#Cheby">Index entries for sequences related to Chebyshev polynomials.</a>
%F A164662 a(n) = Sum_{m=1..n+1} A164658(n,m), n>=0.
%Y A164662 Row sums of denominator triangle A164659 gives A164663.
%K A164662 sign,easy
%O A164662 0,4
%A A164662 _Wolfdieter Lang_, Oct 16 2009