A351780 - cp's OEIS frontend

A351780 a(n) = n! * Sum_{k=0..n} (-k)^(n-k) * (n-k)^k/k!.

n	a(n)
0	1
1	0
2	-2
3	6
4	108
5	-2420
6	8730
7	1313718
8	-57930152
9	567983736
10	109544982390
11	-9917916180590
12	321821829728388
13	32383946348733252
14	-6591798188344856942
15	531702135210365508270
16	11136706526396459006640

[1, 0, -2, 6, 108, -2420, 8730, 1313718, -57930152, 567983736, 109544982390, -9917916180590, 321821829728388, 32383946348733252, -6591798188344856942, 531702135210365508270, 11136706526396459006640]

cp's OEIS Frontend

A351780 a(n) = n! * Sum_{k=0..n} (-k)^(n-k) * (n-k)^k/k!.

Table of values

List of values