A365314 - cp's OEIS frontend

A365314 Number of unordered pairs of distinct positive integers <= n that can be linearly combined using nonnegative coefficients to obtain n.

n	a(n)
0	0
1	0
2	1
3	3
4	6
5	8
6	14
7	14
8	23
9	24
10	33
11	28
12	52
13	36
14	55
15	58
16	73
17	53
18	95
19	62
20	110
21	94
22	105
23	81
24	165
25	105
26	133
27	132
28	176
29	112
30	225
31	123
32	210
33	174
34	192
35	186
36	306
37	157
38	223
39	218
40	328
41	180
42	354
43	192
44	324
45	315
46	288
47	216
48	474
49	260
50	383
51	311
52	404
53	254
54	491
55	338
56	511
57	360

[0, 0, 1, 3, 6, 8, 14, 14, 23, 24, 33, 28, 52, 36, 55, 58, 73, 53, 95, 62, 110, 94, 105, 81, 165, 105, 133, 132, 176, 112, 225, 123, 210, 174, 192, 186, 306, 157, 223, 218, 328, 180, 354, 192, 324, 315, 288, 216, 474, 260, 383, 311, 404, 254, 491, 338, 511, 360]

cp's OEIS Frontend

A365314 Number of unordered pairs of distinct positive integers <= n that can be linearly combined using nonnegative coefficients to obtain n.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	3
4	6
5	8
6	14
7	14
8	23
9	24
10	33
11	28
12	52
13	36
14	55
15	58
16	73
17	53
18	95
19	62
20	110
21	94
22	105
23	81
24	165
25	105
26	133
27	132
28	176
29	112
30	225
31	123
32	210
33	174
34	192
35	186
36	306
37	157
38	223
39	218
40	328
41	180
42	354
43	192
44	324
45	315
46	288
47	216
48	474
49	260
50	383
51	311
52	404
53	254
54	491
55	338
56	511
57	360

n	a(n)
0	0
1	0
2	1
3	3
4	6
5	8
6	14
7	14
8	23
9	24
10	33
11	28
12	52
13	36
14	55
15	58
16	73
17	53
18	95
19	62
20	110
21	94
22	105
23	81
24	165
25	105
26	133
27	132
28	176
29	112
30	225
31	123
32	210
33	174
34	192
35	186
36	306
37	157
38	223
39	218
40	328
41	180
42	354
43	192
44	324
45	315
46	288
47	216
48	474
49	260
50	383
51	311
52	404
53	254
54	491
55	338
56	511
57	360

n	a(n)
0	0
1	0
2	1
3	3
4	6
5	8
6	14
7	14
8	23
9	24
10	33
11	28
12	52
13	36
14	55
15	58
16	73
17	53
18	95
19	62
20	110
21	94
22	105
23	81
24	165
25	105
26	133
27	132
28	176
29	112
30	225
31	123
32	210
33	174
34	192
35	186
36	306
37	157
38	223
39	218
40	328
41	180
42	354
43	192
44	324
45	315
46	288
47	216
48	474
49	260
50	383
51	311
52	404
53	254
54	491
55	338
56	511
57	360