A306680 - cp's OEIS frontend

A306680 Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of g.f. ((1-x)^(k-1))/((1-x)^k-x^(k+1)).

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

[1, 1, 2, 1, 1, 3, 1, 1, 2, 4, 1, 1, 1, 3, 5, 1, 1, 1, 2, 5, 6, 1, 1, 1, 1, 4, 8, 7, 1, 1, 1, 1, 2, 7, 13, 8, 1, 1, 1, 1, 1, 5, 12, 21, 9, 1, 1, 1, 1, 1, 2, 11, 21, 34, 10, 1, 1, 1, 1, 1, 1, 6, 21, 37, 55, 11, 1, 1, 1, 1, 1, 1, 2, 16, 37, 65, 89, 12]

cp's OEIS Frontend

A306680 Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of g.f. ((1-x)^(k-1))/((1-x)^k-x^(k+1)).

Table of values

List of values

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

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

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