A212217 - cp's OEIS frontend

A212217 Number of representations of n as a sum of products of distinct pairs of positive integers >=2, n = Sum_{k=1..m} i_kj_k with 2<=i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_kj_k

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	0
6	1
7	0
8	1
9	1
10	2
11	0
12	3
13	1
14	3
15	2
16	5
17	0
18	7
19	2
20	8
21	3
22	10
23	1
24	15
25	6
26	14
27	6
28	21
29	6
30	28
31	9
32	26
33	14
34	38
35	12
36	50
37	16
38	47
39	26
40	70
41	19
42	82
43	31
44	87
45	47
46	111
47	33
48	141
49	58
50	143
51	71
52	182
53	63
54	228
55	93
56	231
57	117
58	289
59	102
60	364
61	148
62	354
63	187
64	462
65	172
66	537
67	227

[1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 2, 0, 3, 1, 3, 2, 5, 0, 7, 2, 8, 3, 10, 1, 15, 6, 14, 6, 21, 6, 28, 9, 26, 14, 38, 12, 50, 16, 47, 26, 70, 19, 82, 31, 87, 47, 111, 33, 141, 58, 143, 71, 182, 63, 228, 93, 231, 117, 289, 102, 364, 148, 354, 187, 462, 172, 537, 227]

cp's OEIS Frontend

A212217 Number of representations of n as a sum of products of distinct pairs of positive integers >=2, n = Sum_{k=1..m} i_kj_k with 2<=i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_kj_k

Table of values

List of values

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	0
6	1
7	0
8	1
9	1
10	2
11	0
12	3
13	1
14	3
15	2
16	5
17	0
18	7
19	2
20	8
21	3
22	10
23	1
24	15
25	6
26	14
27	6
28	21
29	6
30	28
31	9
32	26
33	14
34	38
35	12
36	50
37	16
38	47
39	26
40	70
41	19
42	82
43	31
44	87
45	47
46	111
47	33
48	141
49	58
50	143
51	71
52	182
53	63
54	228
55	93
56	231
57	117
58	289
59	102
60	364
61	148
62	354
63	187
64	462
65	172
66	537
67	227

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	0
6	1
7	0
8	1
9	1
10	2
11	0
12	3
13	1
14	3
15	2
16	5
17	0
18	7
19	2
20	8
21	3
22	10
23	1
24	15
25	6
26	14
27	6
28	21
29	6
30	28
31	9
32	26
33	14
34	38
35	12
36	50
37	16
38	47
39	26
40	70
41	19
42	82
43	31
44	87
45	47
46	111
47	33
48	141
49	58
50	143
51	71
52	182
53	63
54	228
55	93
56	231
57	117
58	289
59	102
60	364
61	148
62	354
63	187
64	462
65	172
66	537
67	227

cp's OEIS Frontend

A212217 Number of representations of n as a sum of products of distinct pairs of positive integers >=2, n = Sum_{k=1..m} i_k*j_k with 2<=i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_k*j_k

Table of values

List of values

A212217 Number of representations of n as a sum of products of distinct pairs of positive integers >=2, n = Sum_{k=1..m} i_kj_k with 2<=i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_kj_k

n	a(n)
0	1
1	0
2	0
3	0
4	1
5	0
6	1
7	0
8	1
9	1
10	2
11	0
12	3
13	1
14	3
15	2
16	5
17	0
18	7
19	2
20	8
21	3
22	10
23	1
24	15
25	6
26	14
27	6
28	21
29	6
30	28
31	9
32	26
33	14
34	38
35	12
36	50
37	16
38	47
39	26
40	70
41	19
42	82
43	31
44	87
45	47
46	111
47	33
48	141
49	58
50	143
51	71
52	182
53	63
54	228
55	93
56	231
57	117
58	289
59	102
60	364
61	148
62	354
63	187
64	462
65	172
66	537
67	227