A151677 - OEIS

%I #2 Mar 30 2012 16:51:03

%S 2,3,4,6,11,3,6,10,11,19,6,6,11,8,14,15,11,19,15,26,36,3,6,10,11,19,8,

%T 12,21,19,33,21,11,19,15,26,36,19,33,32,49,76,8,6,11,8,14,15,11,19,15,

%U 26,36,8,14,17,23,40,16,26,38,42,73,28,11,19,15,26,36,19,33,32,49,76,17,26,38

%N a(n) = sum_{k >= 0} binomial(3*wt(n+k),k), where wt() = A000120().

%C Suggested by Hagen von Eitzen's formula for A160573.

%K nonn

%O 0,1

%A _N. J. A. Sloane_, Jun 01 2009