OFFSET
0,3
LINKS
Amiram Eldar, Table of n, a(n) for n = 0..200
MAPLE
seq(A152981(n), n=0..40) ; # R. J. Mathar, Jul 08 2011
MATHEMATICA
mot[0] = 1; mot[n_] := mot[n] = mot[n - 1] + Sum[mot[k] * mot[n - 2 - k], {k, 0, n - 2}]; Table[DivisorSigma[1, mot[n]], {n, 0, 32}] (* Amiram Eldar, Nov 26 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Omar E. Pol, Dec 20 2008
STATUS
approved