A211856 - cp's OEIS frontend

A211856 Number of representations of n as a sum of products of distinct pairs of positive integers, considered to be equivalent when terms or factors are reordered.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	6
7	8
8	10
9	15
10	20
11	25
12	34
13	44
14	56
15	74
16	94
17	117
18	151
19	190
20	236
21	298
22	370
23	455
24	567
25	699
26	853
27	1050
28	1282
29	1555
30	1898
31	2299
32	2770
33	3351
34	4035
35	4837
36	5811
37	6952
38	8288
39	9898
40	11782
41	13978
42	16600
43	19660
44	23225
45	27451
46	32366
47	38074
48	44799
49	52609

[1, 1, 1, 2, 3, 4, 6, 8, 10, 15, 20, 25, 34, 44, 56, 74, 94, 117, 151, 190, 236, 298, 370, 455, 567, 699, 853, 1050, 1282, 1555, 1898, 2299, 2770, 3351, 4035, 4837, 5811, 6952, 8288, 9898, 11782, 13978, 16600, 19660, 23225, 27451, 32366, 38074, 44799, 52609]

cp's OEIS Frontend

A211856 Number of representations of n as a sum of products of distinct pairs of positive integers, considered to be equivalent when terms or factors are reordered.

Table of values

List of values