A209561 - cp's OEIS frontend

A209561 Triangle of coefficients of polynomials u(n,x) jointly generated with A209562; see the Formula section.

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	4
9	3
10	1
11	4
12	7
13	7
14	4
15	1
16	5
17	11
18	14
19	11
20	5
21	1
22	6
23	16
24	25
25	25
26	16
27	6
28	1
29	7
30	22
31	41
32	50
33	41
34	22
35	7
36	1
37	8
38	29
39	63
40	91
41	91
42	63
43	29
44	8
45	1
46	9
47	37
48	92
49	154
50	182
51	154
52	92
53	37
54	9
55	1
56	10
57	46
58	129
59	246
60	336
61	336
62	246
63	129
64	46
65	10
66	1
67	11
68	56
69	175
70	375
71	582
72	672

[1, 1, 1, 2, 2, 1, 3, 4, 3, 1, 4, 7, 7, 4, 1, 5, 11, 14, 11, 5, 1, 6, 16, 25, 25, 16, 6, 1, 7, 22, 41, 50, 41, 22, 7, 1, 8, 29, 63, 91, 91, 63, 29, 8, 1, 9, 37, 92, 154, 182, 154, 92, 37, 9, 1, 10, 46, 129, 246, 336, 336, 246, 129, 46, 10, 1, 11, 56, 175, 375, 582, 672]

cp's OEIS Frontend

A209561 Triangle of coefficients of polynomials u(n,x) jointly generated with A209562; see the Formula section.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	4
9	3
10	1
11	4
12	7
13	7
14	4
15	1
16	5
17	11
18	14
19	11
20	5
21	1
22	6
23	16
24	25
25	25
26	16
27	6
28	1
29	7
30	22
31	41
32	50
33	41
34	22
35	7
36	1
37	8
38	29
39	63
40	91
41	91
42	63
43	29
44	8
45	1
46	9
47	37
48	92
49	154
50	182
51	154
52	92
53	37
54	9
55	1
56	10
57	46
58	129
59	246
60	336
61	336
62	246
63	129
64	46
65	10
66	1
67	11
68	56
69	175
70	375
71	582
72	672

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	4
9	3
10	1
11	4
12	7
13	7
14	4
15	1
16	5
17	11
18	14
19	11
20	5
21	1
22	6
23	16
24	25
25	25
26	16
27	6
28	1
29	7
30	22
31	41
32	50
33	41
34	22
35	7
36	1
37	8
38	29
39	63
40	91
41	91
42	63
43	29
44	8
45	1
46	9
47	37
48	92
49	154
50	182
51	154
52	92
53	37
54	9
55	1
56	10
57	46
58	129
59	246
60	336
61	336
62	246
63	129
64	46
65	10
66	1
67	11
68	56
69	175
70	375
71	582
72	672

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	1
7	3
8	4
9	3
10	1
11	4
12	7
13	7
14	4
15	1
16	5
17	11
18	14
19	11
20	5
21	1
22	6
23	16
24	25
25	25
26	16
27	6
28	1
29	7
30	22
31	41
32	50
33	41
34	22
35	7
36	1
37	8
38	29
39	63
40	91
41	91
42	63
43	29
44	8
45	1
46	9
47	37
48	92
49	154
50	182
51	154
52	92
53	37
54	9
55	1
56	10
57	46
58	129
59	246
60	336
61	336
62	246
63	129
64	46
65	10
66	1
67	11
68	56
69	175
70	375
71	582
72	672