A242911 - cp's OEIS frontend

A242911 Half the number of compositions of n into exactly two different parts with equal multiplicities.

n	a(n)
3	1
4	1
5	2
6	5
7	3
8	6
9	14
10	10
11	5
12	56
13	6
14	15
15	153
16	51
17	8
18	502
19	9
20	217
21	1756
22	25
23	11
24	7023
25	264
26	30
27	24363
28	1852
29	14
30	93629
31	15
32	6576
33	352782
34	40
35	3827
36	1377543
37	18
38	45
39	5200379
40	105812
41	20
42	20063228
43	21
44	352942
45	77607976
46	55
47	23
48	301906830
49	5172
50	185320
51	1166803215

[1, 1, 2, 5, 3, 6, 14, 10, 5, 56, 6, 15, 153, 51, 8, 502, 9, 217, 1756, 25, 11, 7023, 264, 30, 24363, 1852, 14, 93629, 15, 6576, 352782, 40, 3827, 1377543, 18, 45, 5200379, 105812, 20, 20063228, 21, 352942, 77607976, 55, 23, 301906830, 5172, 185320, 1166803215]

cp's OEIS Frontend

A242911 Half the number of compositions of n into exactly two different parts with equal multiplicities.

Table of values

List of values