A116645 - cp's OEIS frontend

A116645 Number of partitions of n having no doubletons. By a doubleton in a partition we mean an occurrence of a part exactly twice (the partition [4,(3,3),2,2,2,(1,1)] of 18 has two doubletons, shown between parentheses).

n	a(n)
0	1
1	1
2	1
3	3
4	3
5	5
6	8
7	10
8	13
9	20
10	26
11	33
12	46
13	58
14	75
15	101
16	125
17	157
18	206
19	253
20	317
21	403
22	494
23	608
24	760
25	926
26	1131
27	1393
28	1685
29	2038
30	2487
31	2985
32	3585
33	4331
34	5168
35	6172
36	7392
37	8771
38	10410
39	12382
40	14622
41	17258
42	20400
43	23975
44	28159
45	33115
46	38739
47	45298
48	53000

[1, 1, 1, 3, 3, 5, 8, 10, 13, 20, 26, 33, 46, 58, 75, 101, 125, 157, 206, 253, 317, 403, 494, 608, 760, 926, 1131, 1393, 1685, 2038, 2487, 2985, 3585, 4331, 5168, 6172, 7392, 8771, 10410, 12382, 14622, 17258, 20400, 23975, 28159, 33115, 38739, 45298, 53000]

cp's OEIS Frontend

A116645 Number of partitions of n having no doubletons. By a doubleton in a partition we mean an occurrence of a part exactly twice (the partition [4,(3,3),2,2,2,(1,1)] of 18 has two doubletons, shown between parentheses).

Table of values

List of values