A143506 - cp's OEIS frontend

A143506 Irregular triangle read by rows: first row is 1, and n-th row gives the coefficients of x^(n - 1)*R(n,x + 1/x)/(x + 1/x), where R(n,x) is the n-th row polynomial for A060187.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	6
6	3
7	6
8	1
9	1
10	23
11	26
12	47
13	26
14	23
15	1
16	1
17	76
18	234
19	304
20	467
21	304
22	234
23	76
24	1
25	1
26	237
27	1687
28	2630
29	5293
30	4787
31	5293
32	2630
33	1687
34	237
35	1
36	1
37	722
38	10549
39	27158
40	52730
41	78586
42	84365
43	78586
44	52730
45	27158
46	10549
47	722
48	1
49	1
50	2179
51	60664
52	272797
53	563029
54	1132234

[1, 1, 1, 1, 1, 6, 3, 6, 1, 1, 23, 26, 47, 26, 23, 1, 1, 76, 234, 304, 467, 304, 234, 76, 1, 1, 237, 1687, 2630, 5293, 4787, 5293, 2630, 1687, 237, 1, 1, 722, 10549, 27158, 52730, 78586, 84365, 78586, 52730, 27158, 10549, 722, 1, 1, 2179, 60664, 272797, 563029, 1132234]

cp's OEIS Frontend

A143506 Irregular triangle read by rows: first row is 1, and n-th row gives the coefficients of x^(n - 1)*R(n,x + 1/x)/(x + 1/x), where R(n,x) is the n-th row polynomial for A060187.

Table of values

List of values