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 A169987 #16 Sep 15 2024 11:04:54
%S A169987 1,1,0,1,1,1,1,1,2,1,1,1,1,1,0,1,1
%N A169987 Expansion of Product_{i=0..m-1} (1 + x^(2*i+1)) for m=4.
%C A169987 Product_{i=0..m-1} (1 + x^(2*i+1)) is the Poincaré polynomial for GL(m).
%C A169987 Number of self-conjugate partitions of n into at most 4 parts. Also, number of partitions of n into distinct odd parts not larger than 7. - _Álvar Ibeas_, Jul 30 2020
%D A169987 H. Weyl, The Classical Groups, Princeton, 1946, see p. 233.
%p A169987 f:=proc(m) local x,t1; t1:=mul((1+x^(2*i+1)),i=0..m-1); series(expand(t1),x,200); end;
%p A169987 g:=m->seriestolist(f(m)); g(4);
%t A169987 CoefficientList[Series[Product[1+x^(2i+1),{i,0,3}],{x,0,20}],x] (* _Harvey P. Dale_, Sep 15 2024 *)
%Y A169987 Cf. A169987-A169995 (these are all rows of the triangle in A178666), A000700.
%K A169987 nonn,fini,full
%O A169987 0,9
%A A169987 _N. J. A. Sloane_, Aug 29 2010