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A361090
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E.g.f. satisfies A(x) = exp( x/(1 - x/A(x)) ).
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4
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1, 1, 3, 7, -11, -239, -179, 24991, 192025, -3955391, -89483399, 552615031, 46231717621, 254468241457, -26683006147979, -571848064714289, 14926049610344881, 825004339886219521, -2973711136010539535, -1134313888244827421465, -17734152216328857754739
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OFFSET
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0,3
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LINKS
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FORMULA
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a(n) = n! * Sum_{k=1..n} (-n+k+1)^(k-1) * binomial(n-1,n-k)/k! for n>0.
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PROG
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(PARI) a(n) = if(n==0, 1, n!*sum(k=1, n, (-n+k+1)^(k-1)*binomial(n-1, n-k)/k!));
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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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