A357939 - cp's OEIS frontend

A357939 a(n) = Sum_{k=0..floor(n/2)} Stirling2(k,n - 2*k).

n	a(n)
0	1
1	0
2	0
3	1
4	0
5	1
6	1
7	1
8	3
9	2
10	7
11	7
12	16
13	26
14	41
15	92
16	128
17	317
18	478
19	1107
20	1977
21	4077
22	8547
23	16310
24	37775
25	71489
26	170660
27	339138
28	795833
29	1705058
30	3876254
31	8926023
32	19888522
33	48187837
34	107726407
35	267597455
36	613509355
37	1531527270
38	3646775589
39	9066267823

[1, 0, 0, 1, 0, 1, 1, 1, 3, 2, 7, 7, 16, 26, 41, 92, 128, 317, 478, 1107, 1977, 4077, 8547, 16310, 37775, 71489, 170660, 339138, 795833, 1705058, 3876254, 8926023, 19888522, 48187837, 107726407, 267597455, 613509355, 1531527270, 3646775589, 9066267823]

cp's OEIS Frontend

A357939 a(n) = Sum_{k=0..floor(n/2)} Stirling2(k,n - 2*k).

Table of values

List of values