A177893 - cp's OEIS frontend

A177893 Irregular triangle read by rows giving coefficients of Yablonskii-Vorob'ev polynomials.

n	a(n)
0	1
1	0
2	1
3	4
4	0
5	0
6	1
7	-80
8	0
9	0
10	20
11	1
12	0
13	11200
14	0
15	0
16	0
17	0
18	60
19	0
20	0
21	1
22	-6272000
23	0
24	0
25	-3136000
26	0
27	0
28	78400
29	0
30	0
31	2800
32	0
33	0
34	140
35	0
36	0
37	1
38	-38635520000
39	0
40	0
41	19317760000
42	0
43	0
44	1448832000
45	0
46	0
47	-17248000
48	0
49	0
50	627200
51	0
52	0
53	18480
54	0
55	0
56	280
57	0
58	0
59	1

[1, 0, 1, 4, 0, 0, 1, -80, 0, 0, 20, 1, 0, 11200, 0, 0, 0, 0, 60, 0, 0, 1, -6272000, 0, 0, -3136000, 0, 0, 78400, 0, 0, 2800, 0, 0, 140, 0, 0, 1, -38635520000, 0, 0, 19317760000, 0, 0, 1448832000, 0, 0, -17248000, 0, 0, 627200, 0, 0, 18480, 0, 0, 280, 0, 0, 1]

cp's OEIS Frontend

A177893 Irregular triangle read by rows giving coefficients of Yablonskii-Vorob'ev polynomials.

Table of values

List of values