A090858 - cp's OEIS frontend

A090858 Number of partitions of n such that there is exactly one part which occurs twice, while all other parts occur only once.

n	a(n)
0	0
1	0
2	1
3	0
4	2
5	2
6	2
7	4
8	6
9	7
10	8
11	13
12	15
13	21
14	25
15	30
16	39
17	50
18	58
19	74
20	89
21	105
22	129
23	156
24	185
25	221
26	264
27	309
28	366
29	433
30	505
31	593
32	696
33	805
34	941
35	1090
36	1258
37	1458
38	1684
39	1933
40	2225
41	2555
42	2922
43	3346
44	3823
45	4349
46	4961
47	5644
48	6402
49	7267
50	8234
51	9309
52	10525
53	11886
54	13393

[0, 0, 1, 0, 2, 2, 2, 4, 6, 7, 8, 13, 15, 21, 25, 30, 39, 50, 58, 74, 89, 105, 129, 156, 185, 221, 264, 309, 366, 433, 505, 593, 696, 805, 941, 1090, 1258, 1458, 1684, 1933, 2225, 2555, 2922, 3346, 3823, 4349, 4961, 5644, 6402, 7267, 8234, 9309, 10525, 11886, 13393]

cp's OEIS Frontend

A090858 Number of partitions of n such that there is exactly one part which occurs twice, while all other parts occur only once.

Table of values

List of values