A187115 - cp's OEIS frontend

A187115 Triangle, read by rows, where row n equals the coefficients of y^k in R_{n-1}(y+y^2) for k=2..n, where R_n(y) is the n-th row polynomial in y for n>=2 with R_2(y)=y^2.

n	a(n)
2	1
3	1
4	2
5	1
6	4
7	7
8	1
9	6
10	20
11	40
12	1
13	8
14	39
15	138
16	326
17	1
18	10
19	64
20	318
21	1258
22	3492
23	1
24	12
25	95
26	604
27	3242
28	14476
29	46558
30	1
31	14
32	132
33	1020
34	6844
35	40348
36	202655
37	744320
38	1
39	16
40	175
41	1590
42	12750
43	92140
44	598083
45	3354848
46	13889080
47	1
48	18
49	224
50	2338
51	21766
52	185240
53	1450388
54	10337402
55	64246776
56	296459376

[1, 1, 2, 1, 4, 7, 1, 6, 20, 40, 1, 8, 39, 138, 326, 1, 10, 64, 318, 1258, 3492, 1, 12, 95, 604, 3242, 14476, 46558, 1, 14, 132, 1020, 6844, 40348, 202655, 744320, 1, 16, 175, 1590, 12750, 92140, 598083, 3354848, 13889080, 1, 18, 224, 2338, 21766, 185240, 1450388, 10337402, 64246776, 296459376]

cp's OEIS Frontend

A187115 Triangle, read by rows, where row n equals the coefficients of y^k in R_{n-1}(y+y^2) for k=2..n, where R_n(y) is the n-th row polynomial in y for n>=2 with R_2(y)=y^2.

Table of values

List of values