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Number of sequences of n 2's and 3's with curling number 2 and which have the form XY^2 where Y has length 1 (so Y is 2 or 3).
1

%I #6 Oct 15 2012 23:19:05

%S 0,2,2,4,8,16,32,64,126,252,504,1004,2008,4016,8024,16048,32096,64178,

%T 128356,256712,513392,1026784,2053568,4107076,8214152,16428304,

%U 32856482,65712964,131425928,262851612,525703224,1051406448,2102812394,4205624788,8411249576,16822498162

%N Number of sequences of n 2's and 3's with curling number 2 and which have the form XY^2 where Y has length 1 (so Y is 2 or 3).

%C This is twice A217832, the latter being the main entry for this sequence.

%H <a href="/index/Cu#curling_numbers">Index entries for sequences related to curling numbers</a>

%Y Cf. A217832.

%K nonn

%O 1,2

%A _N. J. A. Sloane_, Oct 15 2012