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A121564
Denominator of Sum_{i=1..n} i!/(i^i).
2
1, 1, 2, 18, 288, 180000, 1620000, 190591380000, 780662292480000, 46097327708651520000, 28810829817907200000000, 747278726094210559615027200000000, 747278726094210559615027200000000, 17410163370762081276553474535120146483200000000
OFFSET
0,3
FORMULA
Denominator of Sum_{i=1..n} A000142(i)/A000312(i).
Limit_{n -> oo} A121563(n)/A121564(n) = A094082.
EXAMPLE
A121563/A121564 = 0, 1, 3/2, 31/18, 523/288, 333787/180000, ... .
MATHEMATICA
Denominator[Table[Sum[i!/(i^i), {i, n}], {n, 12}]] (* James C. McMahon, Oct 19 2024 *)
CROSSREFS
Numerators are in A121563.
Sequence in context: A084947 A123385 A374086 * A224384 A377546 A092563
KEYWORD
easy,frac,nonn,changed
AUTHOR
Jonathan Vos Post, Aug 07 2006
STATUS
approved