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A215710
n-th derivative of x^(((x^x)^x)^x) at x=1.
3
1, 1, 2, 21, 152, 1360, 15174, 184296, 2538584, 39097296, 656793720, 12021152616, 237610299288, 5033625978576, 113810068532328, 2733480292962600, 69463846973884800, 1861656629684769600, 52458209090931835584, 1549997983761108724224, 47908467697220966937600
OFFSET
0,3
COMMENTS
Also n-th derivative of x^(x^(x^3)) at x=1.
LINKS
FORMULA
E.g.f.: (x+1)^((x+1)^((x+1)^3)).
MAPLE
a:= n-> n!*coeff(series(subs(x=x+1, x^(x^(x^3)) ), x, n+1), x, n):
seq(a(n), n=0..25);
CROSSREFS
Column k=14 of A215703.
Sequence in context: A098661 A095262 A209519 * A112673 A263435 A202028
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Aug 21 2012
STATUS
approved