A279966 - cp's OEIS frontend

A279966 Square array read by antidiagonals upwards in which each term is the number of prior elements in the same row, column, diagonal, or antidiagonal that divide n; the array is seeded with an initial value a(1)=1.

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

[1, 1, 2, 2, 2, 4, 2, 5, 1, 5, 2, 5, 2, 5, 4, 5, 0, 4, 1, 9, 2, 5, 0, 6, 6, 3, 4, 6, 2, 7, 1, 6, 4, 6, 5, 11, 2, 4, 2, 10, 1, 8, 2, 10, 3, 7, 0, 9, 4, 6, 3, 5, 1, 9, 5, 8, 0, 5, 1, 14, 4, 4, 2, 10, 7, 8, 2, 4, 2, 11, 3, 16, 3, 6, 7, 8, 5, 10]

cp's OEIS Frontend

A279966 Square array read by antidiagonals upwards in which each term is the number of prior elements in the same row, column, diagonal, or antidiagonal that divide n; the array is seeded with an initial value a(1)=1.

Table of values

List of values

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

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

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