A242821 - cp's OEIS frontend

A242821 Number of compositions of n with equal number of even and odd parts, both counted without multiplicity.

n	a(n)
0	1
1	0
2	0
3	2
4	3
5	11
6	14
7	33
8	43
9	82
10	141
11	260
12	514
13	1049
14	2321
15	4789
16	10454
17	21735
18	46213
19	94782
20	196060
21	398662
22	810178
23	1631089
24	3278372
25	6556096
26	13088339
27	26063238
28	51824061
29	102926784
30	204239173
31	405087125
32	803109813
33	1592179369
34	3156298826
35	6258390137

[1, 0, 0, 2, 3, 11, 14, 33, 43, 82, 141, 260, 514, 1049, 2321, 4789, 10454, 21735, 46213, 94782, 196060, 398662, 810178, 1631089, 3278372, 6556096, 13088339, 26063238, 51824061, 102926784, 204239173, 405087125, 803109813, 1592179369, 3156298826, 6258390137]

cp's OEIS Frontend

A242821 Number of compositions of n with equal number of even and odd parts, both counted without multiplicity.

Table of values

List of values