Voozh

A284910

1, 1, 1, 2, 3, 5, 12, 27, 89, 296, 1426, 7108, 58499, 483330, 6711480, 109420549, 2973772212, 98872765938, 6193924614094, 495007377762304, 79850366709300780, 18640233243121488514, 9131454268089695383606, 7218306932686390208993280, 13823416565311581226765397400

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,4

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..40

MAPLE

with(numtheory):

b:= proc(n) option remember; `if`(n=0, 1, add(add(

`if`(d::odd, d, 0), d=divisors(j))*b(n-j), j=1..n)/n)

end:

a:= n-> b(combinat[numbpart](n)):

seq(a(n), n=0..22);