A365321 - cp's OEIS frontend

A365321 Number of pairs of distinct positive integers <= n that cannot be linearly combined with positive coefficients to obtain n.

n	a(n)
0	0
1	0
2	1
3	2
4	4
5	6
6	10
7	13
8	18
9	24
10	30
11	37
12	46
13	54
14	63
15	77
16	85
17	99
18	111
19	127
20	141
21	161
22	171
23	194
24	210
25	235
26	246
27	277
28	293
29	322
30	342
31	372
32	389
33	428
34	441
35	491
36	504
37	545
38	561
39	612
40	635
41	680
42	701
43	753
44	773
45	836
46	846
47	911
48	932
49	1000
50	1017
51	1082
52	1103
53	1176
54	1193

[0, 0, 1, 2, 4, 6, 10, 13, 18, 24, 30, 37, 46, 54, 63, 77, 85, 99, 111, 127, 141, 161, 171, 194, 210, 235, 246, 277, 293, 322, 342, 372, 389, 428, 441, 491, 504, 545, 561, 612, 635, 680, 701, 753, 773, 836, 846, 911, 932, 1000, 1017, 1082, 1103, 1176, 1193]

cp's OEIS Frontend

A365321 Number of pairs of distinct positive integers <= n that cannot be linearly combined with positive coefficients to obtain n.

Table of values

List of values