A306489 - cp's OEIS frontend

A306489 Square array A(n,k), n >= 0, k >= 1, read by antidiagonals, where column k is the expansion of 1/(1 - Sum_{d|k} x^d).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	1
10	1
11	1
12	1
13	3
14	1
15	1
16	1
17	2
18	2
19	5
20	1
21	1
22	1
23	1
24	3
25	3
26	8
27	1
28	1
29	1
30	2
31	1
32	6
33	4
34	13
35	1
36	1
37	1
38	1
39	4
40	1
41	10
42	6
43	21
44	1
45	1
46	1
47	2
48	1
49	7
50	2
51	18
52	9
53	34
54	1
55	1
56	1
57	1
58	3
59	1
60	13
61	3
62	31
63	13
64	55
65	1
66	1
67	1
68	2
69	2
70	6
71	1
72	25
73	4
74	55
75	19
76	89
77	1
78	1
79	1
80	1
81	3
82	3
83	10
84	1
85	46
86	5
87	96
88	28
89	144
90	1

[1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 3, 1, 1, 1, 2, 2, 5, 1, 1, 1, 1, 3, 3, 8, 1, 1, 1, 2, 1, 6, 4, 13, 1, 1, 1, 1, 4, 1, 10, 6, 21, 1, 1, 1, 2, 1, 7, 2, 18, 9, 34, 1, 1, 1, 1, 3, 1, 13, 3, 31, 13, 55, 1, 1, 1, 2, 2, 6, 1, 25, 4, 55, 19, 89, 1, 1, 1, 1, 3, 3, 10, 1, 46, 5, 96, 28, 144, 1]

cp's OEIS Frontend

A306489 Square array A(n,k), n >= 0, k >= 1, read by antidiagonals, where column k is the expansion of 1/(1 - Sum_{d|k} x^d).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	1
10	1
11	1
12	1
13	3
14	1
15	1
16	1
17	2
18	2
19	5
20	1
21	1
22	1
23	1
24	3
25	3
26	8
27	1
28	1
29	1
30	2
31	1
32	6
33	4
34	13
35	1
36	1
37	1
38	1
39	4
40	1
41	10
42	6
43	21
44	1
45	1
46	1
47	2
48	1
49	7
50	2
51	18
52	9
53	34
54	1
55	1
56	1
57	1
58	3
59	1
60	13
61	3
62	31
63	13
64	55
65	1
66	1
67	1
68	2
69	2
70	6
71	1
72	25
73	4
74	55
75	19
76	89
77	1
78	1
79	1
80	1
81	3
82	3
83	10
84	1
85	46
86	5
87	96
88	28
89	144
90	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	1
10	1
11	1
12	1
13	3
14	1
15	1
16	1
17	2
18	2
19	5
20	1
21	1
22	1
23	1
24	3
25	3
26	8
27	1
28	1
29	1
30	2
31	1
32	6
33	4
34	13
35	1
36	1
37	1
38	1
39	4
40	1
41	10
42	6
43	21
44	1
45	1
46	1
47	2
48	1
49	7
50	2
51	18
52	9
53	34
54	1
55	1
56	1
57	1
58	3
59	1
60	13
61	3
62	31
63	13
64	55
65	1
66	1
67	1
68	2
69	2
70	6
71	1
72	25
73	4
74	55
75	19
76	89
77	1
78	1
79	1
80	1
81	3
82	3
83	10
84	1
85	46
86	5
87	96
88	28
89	144
90	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	2
9	1
10	1
11	1
12	1
13	3
14	1
15	1
16	1
17	2
18	2
19	5
20	1
21	1
22	1
23	1
24	3
25	3
26	8
27	1
28	1
29	1
30	2
31	1
32	6
33	4
34	13
35	1
36	1
37	1
38	1
39	4
40	1
41	10
42	6
43	21
44	1
45	1
46	1
47	2
48	1
49	7
50	2
51	18
52	9
53	34
54	1
55	1
56	1
57	1
58	3
59	1
60	13
61	3
62	31
63	13
64	55
65	1
66	1
67	1
68	2
69	2
70	6
71	1
72	25
73	4
74	55
75	19
76	89
77	1
78	1
79	1
80	1
81	3
82	3
83	10
84	1
85	46
86	5
87	96
88	28
89	144
90	1