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 A022671 #11 Sep 08 2022 08:44:46
%S A022671 1,-11,33,44,-341,88,1023,1287,-2959,-12958,9119,27103,45529,8349,
%T A022671 -269324,-262218,-83688,1326985,2245881,-109131,-2655939,-12119899,
%U A022671 -13052019,1449316,49891809,98829445,62513847,-67450570,-406154540,-631008378,-597001801,801699162,2523580444,4221608313
%N A022671 Expansion of Product_{m >= 1} (1-m*q^m)^11.
%H A022671 G. C. Greubel, <a href="/A022671/b022671.txt">Table of n, a(n) for n = 0..1000</a>
%t A022671 With[{nmax = 50}, CoefficientList[Series[Product[(1 - k*q^k)^11, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Feb 24 2018 *)
%o A022671 (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1-n*q^n)^11)) \\ _G. C. Greubel_, Feb 24 2018
%o A022671 (Magma) Coefficients(&*[(1-m*x^m)^11:m in [1..40]])[1..40] where x is PolynomialRing(Integers()).1; // _G. C. Greubel_, Feb 24 2018
%K A022671 sign
%O A022671 0,2
%A A022671 _N. J. A. Sloane_
%E A022671 Terms a(28) onward added by _G. C. Greubel_, Feb 24 2018