A212218 - cp's OEIS frontend

A212218 Number of representations of n as a sum of products of distinct pairs of positive integers, n = Sum_{k=1..m} i_k*j_k with i_k<=j_k, i_k

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	2
7	2
8	3
9	3
10	4
11	4
12	4
13	5
14	6
15	5
16	7
17	7
18	8
19	9
20	10
21	9
22	11
23	12
24	13
25	14
26	16
27	14
28	18
29	21
30	19
31	20
32	23
33	23
34	28
35	28
36	28
37	30
38	36
39	33
40	39
41	42
42	39
43	44
44	50
45	46
46	54
47	57
48	56
49	62
50	69
51	64
52	71
53	77
54	82
55	85
56	89
57	84
58	99
59	107
60	103
61	111
62	119
63	117
64	132
65	137
66	137
67	142

[1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 4, 4, 5, 6, 5, 7, 7, 8, 9, 10, 9, 11, 12, 13, 14, 16, 14, 18, 21, 19, 20, 23, 23, 28, 28, 28, 30, 36, 33, 39, 42, 39, 44, 50, 46, 54, 57, 56, 62, 69, 64, 71, 77, 82, 85, 89, 84, 99, 107, 103, 111, 119, 117, 132, 137, 137, 142]

cp's OEIS Frontend

A212218 Number of representations of n as a sum of products of distinct pairs of positive integers, n = Sum_{k=1..m} i_k*j_k with i_k<=j_k, i_k

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	2
7	2
8	3
9	3
10	4
11	4
12	4
13	5
14	6
15	5
16	7
17	7
18	8
19	9
20	10
21	9
22	11
23	12
24	13
25	14
26	16
27	14
28	18
29	21
30	19
31	20
32	23
33	23
34	28
35	28
36	28
37	30
38	36
39	33
40	39
41	42
42	39
43	44
44	50
45	46
46	54
47	57
48	56
49	62
50	69
51	64
52	71
53	77
54	82
55	85
56	89
57	84
58	99
59	107
60	103
61	111
62	119
63	117
64	132
65	137
66	137
67	142

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	2
7	2
8	3
9	3
10	4
11	4
12	4
13	5
14	6
15	5
16	7
17	7
18	8
19	9
20	10
21	9
22	11
23	12
24	13
25	14
26	16
27	14
28	18
29	21
30	19
31	20
32	23
33	23
34	28
35	28
36	28
37	30
38	36
39	33
40	39
41	42
42	39
43	44
44	50
45	46
46	54
47	57
48	56
49	62
50	69
51	64
52	71
53	77
54	82
55	85
56	89
57	84
58	99
59	107
60	103
61	111
62	119
63	117
64	132
65	137
66	137
67	142

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	2
7	2
8	3
9	3
10	4
11	4
12	4
13	5
14	6
15	5
16	7
17	7
18	8
19	9
20	10
21	9
22	11
23	12
24	13
25	14
26	16
27	14
28	18
29	21
30	19
31	20
32	23
33	23
34	28
35	28
36	28
37	30
38	36
39	33
40	39
41	42
42	39
43	44
44	50
45	46
46	54
47	57
48	56
49	62
50	69
51	64
52	71
53	77
54	82
55	85
56	89
57	84
58	99
59	107
60	103
61	111
62	119
63	117
64	132
65	137
66	137
67	142