A356834 - cp's OEIS frontend

A356834 a(n) = n! * Sum_{k=0..floor(n/2)} (n - 2k)^n/(n - 2k)!.

n	a(n)
0	1
1	1
2	4
3	33
4	448
5	8105
6	192576
7	5946913
8	226097152
9	10389920913
10	571788928000
11	36818407010561
12	2741300619657216
13	234014330510734969
14	22620660476040331264
15	2457467449742570271105
16	298061856229112792743936
17	40058727579693211737837857

[1, 1, 4, 33, 448, 8105, 192576, 5946913, 226097152, 10389920913, 571788928000, 36818407010561, 2741300619657216, 234014330510734969, 22620660476040331264, 2457467449742570271105, 298061856229112792743936, 40058727579693211737837857]

cp's OEIS Frontend

A356834 a(n) = n! * Sum_{k=0..floor(n/2)} (n - 2k)^n/(n - 2k)!.

Table of values

List of values

cp's OEIS Frontend

A356834 a(n) = n! * Sum_{k=0..floor(n/2)} (n - 2*k)^n/(n - 2*k)!.

Table of values

List of values

A356834 a(n) = n! * Sum_{k=0..floor(n/2)} (n - 2k)^n/(n - 2k)!.