OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..384
FORMULA
E.g.f.: exp(exp(x)*(x^7+21*x^6+140*x^5+350*x^4+301*x^3+63*x^2+x)).
MAPLE
a:= proc(n) option remember; `if`(n=0, 1,
add(binomial(n-1, j-1)*j^7*a(n-j), j=1..n))
end:
seq(a(n), n=0..25);
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Dec 16 2016
STATUS
approved