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A203228 (n-1)-st elementary symmetric function of (1!,...,(n-1)!). 4
1, 3, 20, 492, 59328, 42750720, 215488512000, 8688622215168000, 3152932286024908800000, 11441362514460661304524800000, 456702585875829909265192058880000000, 218761269624450195162273767321763840000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..12.

FORMULA

From Daniel Suteu, Dec 04 2016: (Start)

a(n) ~ (e-1) * A000178(n).

a(1) = 1, a(n) = n! * a(n-1) + A000178(n-1). (End)

MATHEMATICA

f[k_] := k!; t[n_] := Table[f[k], {k, n}]

a[n_] := SymmetricPolynomial[n - 1, t[n]]

Table[a[n], {n, 14}] (* A203228 *)

CROSSREFS

Cf. A000142, A203222.

Sequence in context: A322455 A138897 A189603 * A174972 A300917 A089943

Adjacent sequences:  A203225 A203226 A203227 * A203229 A203230 A203231

KEYWORD

nonn

AUTHOR

Clark Kimberling, Dec 30 2011

STATUS

approved

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Last modified October 18 05:18 EDT 2019. Contains 328146 sequences. (Running on oeis4.)