A011959 - OEIS

%I #5 Mar 30 2012 16:45:51

%S 0,0,1,1,0,1,1,1,1,3,3,4,7,11,15,24,36,55,81,129,195,301,465,728,1116,

%T 1745,2717,4239,6603,10357,16189,25383,39807,62557,98245,154608,

%U 243346,383436,604346,953582,1505106,2377442,3757050,5941269

%N Number of SiC polytypes that repeat after 2n layers.

%D T. J. McLarnan, The numbers of polytypes ..., Zeits. Krist. 155, 269-291 (1981).

%K nonn,easy

%O 1,10

%A _N. J. A. Sloane_.