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A215708
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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, 4, 24, 148, 1180, 10428, 106876, 1198160, 14843808, 198832320, 2877693984, 44545268832, 734929736736, 12852051257472, 237372559264320, 4614124211454720, 94103610003019008, 2008507968212696064, 44748953208031094784, 1038646472528272158720
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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)^2) at x=1.
First term < 0: a(175).
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LINKS
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FORMULA
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E.g.f.: (x+1)^((x+1)^(2*x+2)).
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MAPLE
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a:= n-> n!*coeff(series(subs(x=x+1, x^((x^x)^2) ), 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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sign
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AUTHOR
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STATUS
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approved
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