A362282 - cp's OEIS frontend

A362282 a(n) = n! * Sum_{k=0..floor(n/2)} (-n)^k * binomial(n-k,k)/(n-k)!.

n	a(n)
0	1
1	1
2	-3
3	-17
4	145
5	1401
6	-19619
7	-267833
8	5214273
9	91975825
10	-2292948899
11	-49586832129
12	1506939887377
13	38595456391753
14	-1383612408628995
15	-40951481342092649
16	1691614670048805121
17	56809502720559644577
18	-2656760323700732460227
19	-99810124102484722532465

[1, 1, -3, -17, 145, 1401, -19619, -267833, 5214273, 91975825, -2292948899, -49586832129, 1506939887377, 38595456391753, -1383612408628995, -40951481342092649, 1691614670048805121, 56809502720559644577, -2656760323700732460227, -99810124102484722532465]

cp's OEIS Frontend

A362282 a(n) = n! * Sum_{k=0..floor(n/2)} (-n)^k * binomial(n-k,k)/(n-k)!.

Table of values

List of values