A025066 - OEIS

A025066

a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ] and s = A023532.

%I #3 Mar 30 2012 18:56:01

%S 0,1,1,0,2,1,2,2,3,2,3,4,3,4,4,5,6,5,5,6,7,6,8,7,8,8,10,8,9,10,10,11,

%T 11,11,12,11,12,14,14,13,14,15,14,15,16,15,18,16,17,17,19,19,19,19,19,

%U 20,21,20,21,22,23,23,23,22,24,24,24,26,26,25,26,28,27,27,28,27,31,28,30,30,30,30,32,32

%N a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = [ n/2 ] and s = A023532.

%K nonn

%O 1,5

%A _Clark Kimberling_