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A215710
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n-th derivative of x^(((x^x)^x)^x) at x=1.
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3
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1, 1, 2, 21, 152, 1360, 15174, 184296, 2538584, 39097296, 656793720, 12021152616, 237610299288, 5033625978576, 113810068532328, 2733480292962600, 69463846973884800, 1861656629684769600, 52458209090931835584, 1549997983761108724224, 47908467697220966937600
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OFFSET
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0,3
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COMMENTS
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Also n-th derivative of x^(x^(x^3)) at x=1.
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LINKS
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FORMULA
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E.g.f.: (x+1)^((x+1)^((x+1)^3)).
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MAPLE
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a:= n-> n!*coeff(series(subs(x=x+1, x^(x^(x^3)) ), x, n+1), x, n):
seq(a(n), n=0..25);
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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