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A203228 (n-1)-st elementary symmetric function of (1!,...,(n-1)!). 4

%I #13 Dec 15 2016 23:49:24

%S 1,3,20,492,59328,42750720,215488512000,8688622215168000,

%T 3152932286024908800000,11441362514460661304524800000,

%U 456702585875829909265192058880000000,218761269624450195162273767321763840000000000

%N (n-1)-st elementary symmetric function of (1!,...,(n-1)!).

%F From _Daniel Suteu_, Dec 04 2016: (Start)

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

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

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

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

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

%Y Cf. A000142, A203222.

%K nonn

%O 1,2

%A _Clark Kimberling_, Dec 30 2011

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)