A002219 - cp's OEIS frontend

A002219 a(n) is the number of partitions of 2n that can be obtained by adding together two (not necessarily distinct) partitions of n.

n	a(n)
1	1
2	3
3	6
4	14
5	25
6	53
7	89
8	167
9	278
10	480
11	760
12	1273
13	1948
14	3089
15	4682
16	7177
17	10565
18	15869
19	22911
20	33601
21	47942
22	68756
23	96570
24	136883
25	189674
26	264297
27	362995
28	499617
29	678245
30	924522
31	1243098
32	1676339
33	2237625
34	2988351
35	3957525
36	5247500
37	6895946
38	9070144
39	11850304

[1, 3, 6, 14, 25, 53, 89, 167, 278, 480, 760, 1273, 1948, 3089, 4682, 7177, 10565, 15869, 22911, 33601, 47942, 68756, 96570, 136883, 189674, 264297, 362995, 499617, 678245, 924522, 1243098, 1676339, 2237625, 2988351, 3957525, 5247500, 6895946, 9070144, 11850304]

cp's OEIS Frontend

A002219 a(n) is the number of partitions of 2n that can be obtained by adding together two (not necessarily distinct) partitions of n.

Table of values

List of values