A171147 - cp's OEIS frontend

A171147 The sequence of coefficients of a polynomial recursion: p(x,n)=If[Mod[n, 2] == 0, (x + 1)p(x, n - 1), (x^2 + (2n)*x + 1)^Floor[n/2]].

n	a(n)
1	1
2	1
3	1
4	1
5	6
6	1
7	1
8	7
9	7
10	1
11	1
12	20
13	102
14	20
15	1
16	1
17	21
18	122
19	122
20	21
21	1
22	1
23	42
24	591
25	2828
26	591
27	42
28	1
29	1
30	43
31	633
32	3419
33	3419
34	633
35	43
36	1
37	1
38	72
39	1948
40	23544
41	108870
42	23544
43	1948
44	72
45	1
46	1
47	73
48	2020
49	25492
50	132414
51	132414
52	25492
53	2020
54	73
55	1
56	1
57	110
58	4845
59	106920

[1, 1, 1, 1, 6, 1, 1, 7, 7, 1, 1, 20, 102, 20, 1, 1, 21, 122, 122, 21, 1, 1, 42, 591, 2828, 591, 42, 1, 1, 43, 633, 3419, 3419, 633, 43, 1, 1, 72, 1948, 23544, 108870, 23544, 1948, 72, 1, 1, 73, 2020, 25492, 132414, 132414, 25492, 2020, 73, 1, 1, 110, 4845, 106920]

cp's OEIS Frontend

A171147 The sequence of coefficients of a polynomial recursion: p(x,n)=If[Mod[n, 2] == 0, (x + 1)p(x, n - 1), (x^2 + (2n)*x + 1)^Floor[n/2]].

Table of values

List of values

cp's OEIS Frontend

A171147 The sequence of coefficients of a polynomial recursion: p(x,n)=If[Mod[n, 2] == 0, (x + 1)*p(x, n - 1), (x^2 + (2*n)*x + 1)^Floor[n/2]].

Table of values

List of values

A171147 The sequence of coefficients of a polynomial recursion: p(x,n)=If[Mod[n, 2] == 0, (x + 1)p(x, n - 1), (x^2 + (2n)*x + 1)^Floor[n/2]].