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A279017
a(n) = unreduced numerator in Sum_{k=1..n}(1/k^k).
1
0, 1, 5, 139, 35692, 111565148, 5205269945088, 4286767657466006784, 71920030250887607243833344, 27863293344390107424172413346185216, 278632933465479015464665989671020186828800000, 79497227734495207011816776516244120065118266248396800000
OFFSET
0,3
LINKS
FORMULA
a(n) ~ A073009 * A002109(n).
a(0) = 0, a(n) = n^n * a(n-1) + A002109(n-1).
PROG
(PARI) sum(k=1, n, 1/k^k) * prod(k=1, n, k^k)
CROSSREFS
Cf. A073009.
Sequence in context: A188451 A362993 A061463 * A091058 A155177 A054323
KEYWORD
nonn,easy
AUTHOR
Daniel Suteu, Dec 03 2016
STATUS
approved