login
a(n) = A002861(n) + A000081(n).
1

%I #5 Aug 23 2016 20:51:14

%S 2,3,6,13,29,71,173,444,1148,3030,8059,21715,58836,160687,441083,

%T 1217134,3372386,9380948,26180962,73292358,205731862,578922864,

%U 1632707684,4614098810,13064064882,37052720050,105257568244,299452309023,853094139960,2433439189419

%N a(n) = A002861(n) + A000081(n).

%Y See A126285.

%K nonn

%O 1,1

%A _N. J. A. Sloane_, Dec 26 2006