A133297 - cp's OEIS frontend

A133297 a(n) = n!Sum_{k=1..n} (-1)^(k+1)n^(n-k-1)/(n-k)!.

n	a(n)
0	0
1	1
2	1
3	5
4	34
5	329
6	4056
7	60997
8	1082320
9	22137201
10	512801920
11	13269953861
12	379400765184
13	11877265764025
14	404067857880064
15	14843708906336325
16	585606019079612416
17	24693567694861202273
18	1108343071153648926720
19	52757597474618636748421
20	2654611611461360017408000

[0, 1, 1, 5, 34, 329, 4056, 60997, 1082320, 22137201, 512801920, 13269953861, 379400765184, 11877265764025, 404067857880064, 14843708906336325, 585606019079612416, 24693567694861202273, 1108343071153648926720, 52757597474618636748421, 2654611611461360017408000]

cp's OEIS Frontend

A133297 a(n) = n!Sum_{k=1..n} (-1)^(k+1)n^(n-k-1)/(n-k)!.

Table of values

List of values

cp's OEIS Frontend

A133297 a(n) = n!*Sum_{k=1..n} (-1)^(k+1)*n^(n-k-1)/(n-k)!.

Table of values

List of values

A133297 a(n) = n!Sum_{k=1..n} (-1)^(k+1)n^(n-k-1)/(n-k)!.