A281817 - cp's OEIS frontend

A281817 a(n) = 2Sum_{k odd} k!Stirling2(n,k)/(k + 1).

n	a(n)
0	0
1	1
2	1
3	4
4	19
5	116
6	871
7	7764
8	80179
9	941812
10	12403711
11	181056404
12	2901669739
13	50656307508
14	956922611191
15	19449063226324
16	423206168046499
17	9816562636678004
18	241805428075379311
19	6303793707327637524
20	173401707643671303259

[0, 1, 1, 4, 19, 116, 871, 7764, 80179, 941812, 12403711, 181056404, 2901669739, 50656307508, 956922611191, 19449063226324, 423206168046499, 9816562636678004, 241805428075379311, 6303793707327637524, 173401707643671303259]

cp's OEIS Frontend

A281817 a(n) = 2Sum_{k odd} k!Stirling2(n,k)/(k + 1).

Table of values

List of values

cp's OEIS Frontend

A281817 a(n) = 2*Sum_{k odd} k!*Stirling2(n,k)/(k + 1).

Table of values

List of values

A281817 a(n) = 2Sum_{k odd} k!Stirling2(n,k)/(k + 1).