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%I #16 Feb 01 2022 01:19:29
%S 0,1,2,11,40,361,1952,24611,177280,2873041,25866752,512343611,
%T 5535262720,129570724921,1633165156352,44110959165011,635421069967360,
%U 19450718635716001,315212388819402752,10784052561125704811
%N Expansion of (sin^2 x + sin x) /cos 2x.
%H R. J. Mathar, <a href="/A000822/b000822.txt">Table of n, a(n) for n = 0..177</a>
%Y Bisections are A000464 and A000816.
%K nonn
%O 0,3
%A _N. J. A. Sloane_