A385202 - cp's OEIS frontend

A385202 Irregular triangle read by rows: let S be an ordered set of nondivisors of n such that a and b belong to S if a + b = n. T(n,k) is the k-th member of S. If S is empty, T(n,k) = 0.

n	a(n)
1	0
2	0
3	0
4	0
5	2
6	3
7	0
8	2
9	3
10	4
11	5
12	3
13	5
14	2
15	4
16	5
17	7
18	3
19	4
20	6
21	7
22	2
23	3
24	4
25	5
26	6
27	7
28	8
29	9
30	5
31	7
32	2
33	3
34	4
35	5
36	6
37	7
38	8
39	9
40	10
41	11
42	3
43	4
44	5
45	6
46	8
47	9
48	10
49	11
50	2
51	4
52	6
53	7
54	8
55	9
56	11
57	13
58	3
59	5
60	6
61	7
62	9
63	10
64	11
65	13
66	2
67	3
68	4
69	5
70	6
71	7
72	8
73	9
74	10
75	11
76	12
77	13
78	14
79	15
80	4
81	5
82	7
83	8
84	10
85	11
86	13
87	14

[0, 0, 0, 0, 2, 3, 0, 2, 3, 4, 5, 3, 5, 2, 4, 5, 7, 3, 4, 6, 7, 2, 3, 4, 5, 6, 7, 8, 9, 5, 7, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 3, 4, 5, 6, 8, 9, 10, 11, 2, 4, 6, 7, 8, 9, 11, 13, 3, 5, 6, 7, 9, 10, 11, 13, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 4, 5, 7, 8, 10, 11, 13, 14]

cp's OEIS Frontend

A385202 Irregular triangle read by rows: let S be an ordered set of nondivisors of n such that a and b belong to S if a + b = n. T(n,k) is the k-th member of S. If S is empty, T(n,k) = 0.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	2
6	3
7	0
8	2
9	3
10	4
11	5
12	3
13	5
14	2
15	4
16	5
17	7
18	3
19	4
20	6
21	7
22	2
23	3
24	4
25	5
26	6
27	7
28	8
29	9
30	5
31	7
32	2
33	3
34	4
35	5
36	6
37	7
38	8
39	9
40	10
41	11
42	3
43	4
44	5
45	6
46	8
47	9
48	10
49	11
50	2
51	4
52	6
53	7
54	8
55	9
56	11
57	13
58	3
59	5
60	6
61	7
62	9
63	10
64	11
65	13
66	2
67	3
68	4
69	5
70	6
71	7
72	8
73	9
74	10
75	11
76	12
77	13
78	14
79	15
80	4
81	5
82	7
83	8
84	10
85	11
86	13
87	14

n	a(n)
1	0
2	0
3	0
4	0
5	2
6	3
7	0
8	2
9	3
10	4
11	5
12	3
13	5
14	2
15	4
16	5
17	7
18	3
19	4
20	6
21	7
22	2
23	3
24	4
25	5
26	6
27	7
28	8
29	9
30	5
31	7
32	2
33	3
34	4
35	5
36	6
37	7
38	8
39	9
40	10
41	11
42	3
43	4
44	5
45	6
46	8
47	9
48	10
49	11
50	2
51	4
52	6
53	7
54	8
55	9
56	11
57	13
58	3
59	5
60	6
61	7
62	9
63	10
64	11
65	13
66	2
67	3
68	4
69	5
70	6
71	7
72	8
73	9
74	10
75	11
76	12
77	13
78	14
79	15
80	4
81	5
82	7
83	8
84	10
85	11
86	13
87	14

n	a(n)
1	0
2	0
3	0
4	0
5	2
6	3
7	0
8	2
9	3
10	4
11	5
12	3
13	5
14	2
15	4
16	5
17	7
18	3
19	4
20	6
21	7
22	2
23	3
24	4
25	5
26	6
27	7
28	8
29	9
30	5
31	7
32	2
33	3
34	4
35	5
36	6
37	7
38	8
39	9
40	10
41	11
42	3
43	4
44	5
45	6
46	8
47	9
48	10
49	11
50	2
51	4
52	6
53	7
54	8
55	9
56	11
57	13
58	3
59	5
60	6
61	7
62	9
63	10
64	11
65	13
66	2
67	3
68	4
69	5
70	6
71	7
72	8
73	9
74	10
75	11
76	12
77	13
78	14
79	15
80	4
81	5
82	7
83	8
84	10
85	11
86	13
87	14