A209421 - cp's OEIS frontend

A209421 Triangle of coefficients of polynomials u(n,x) jointly generated with A209422; see the Formula section.

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	5
8	4
9	1
10	1
11	9
12	7
13	5
14	1
15	1
16	15
17	15
18	9
19	6
20	1
21	1
22	25
23	28
24	22
25	11
26	7
27	1
28	1
29	41
30	53
31	44
32	30
33	13
34	8
35	1
36	1
37	67
38	97
39	91
40	63
41	39
42	15
43	9
44	1
45	1
46	109
47	176
48	179
49	140
50	85
51	49
52	17
53	10
54	1
55	1
56	177
57	315
58	349
59	291
60	201
61	110
62	60
63	19
64	11
65	1
66	1
67	287
68	559
69	667
70	601
71	437
72	275
73	138
74	72
75	21
76	12
77	1
78	1

[1, 1, 1, 3, 1, 1, 5, 4, 1, 1, 9, 7, 5, 1, 1, 15, 15, 9, 6, 1, 1, 25, 28, 22, 11, 7, 1, 1, 41, 53, 44, 30, 13, 8, 1, 1, 67, 97, 91, 63, 39, 15, 9, 1, 1, 109, 176, 179, 140, 85, 49, 17, 10, 1, 1, 177, 315, 349, 291, 201, 110, 60, 19, 11, 1, 1, 287, 559, 667, 601, 437, 275, 138, 72, 21, 12, 1, 1]

cp's OEIS Frontend

A209421 Triangle of coefficients of polynomials u(n,x) jointly generated with A209422; see the Formula section.

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	5
8	4
9	1
10	1
11	9
12	7
13	5
14	1
15	1
16	15
17	15
18	9
19	6
20	1
21	1
22	25
23	28
24	22
25	11
26	7
27	1
28	1
29	41
30	53
31	44
32	30
33	13
34	8
35	1
36	1
37	67
38	97
39	91
40	63
41	39
42	15
43	9
44	1
45	1
46	109
47	176
48	179
49	140
50	85
51	49
52	17
53	10
54	1
55	1
56	177
57	315
58	349
59	291
60	201
61	110
62	60
63	19
64	11
65	1
66	1
67	287
68	559
69	667
70	601
71	437
72	275
73	138
74	72
75	21
76	12
77	1
78	1

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	5
8	4
9	1
10	1
11	9
12	7
13	5
14	1
15	1
16	15
17	15
18	9
19	6
20	1
21	1
22	25
23	28
24	22
25	11
26	7
27	1
28	1
29	41
30	53
31	44
32	30
33	13
34	8
35	1
36	1
37	67
38	97
39	91
40	63
41	39
42	15
43	9
44	1
45	1
46	109
47	176
48	179
49	140
50	85
51	49
52	17
53	10
54	1
55	1
56	177
57	315
58	349
59	291
60	201
61	110
62	60
63	19
64	11
65	1
66	1
67	287
68	559
69	667
70	601
71	437
72	275
73	138
74	72
75	21
76	12
77	1
78	1

n	a(n)
1	1
2	1
3	1
4	3
5	1
6	1
7	5
8	4
9	1
10	1
11	9
12	7
13	5
14	1
15	1
16	15
17	15
18	9
19	6
20	1
21	1
22	25
23	28
24	22
25	11
26	7
27	1
28	1
29	41
30	53
31	44
32	30
33	13
34	8
35	1
36	1
37	67
38	97
39	91
40	63
41	39
42	15
43	9
44	1
45	1
46	109
47	176
48	179
49	140
50	85
51	49
52	17
53	10
54	1
55	1
56	177
57	315
58	349
59	291
60	201
61	110
62	60
63	19
64	11
65	1
66	1
67	287
68	559
69	667
70	601
71	437
72	275
73	138
74	72
75	21
76	12
77	1
78	1