A187120 - cp's OEIS frontend

A187120 Triangle, read by rows, where row n equals the coefficients of y^k in R_{n-1}(y+y^2) for k=3..n, where R_n(y) is the n-th row polynomial in y for n>=3 with R_3(y)=y^3.

n	a(n)
3	1
4	1
5	3
6	1
7	6
8	15
9	1
10	9
11	42
12	112
13	1
14	12
15	81
16	377
17	1128
18	1
19	15
20	132
21	855
22	4248
23	14373
24	1
25	18
26	195
27	1606
28	10758
29	58269
30	221952
31	1
32	21
33	270
34	2690
35	22416
36	159633
37	947117
38	4029915
39	1
40	24
41	357
42	4167
43	41340
44	359616
45	2750067
46	17848872
47	84135510
48	1
49	27
50	456
51	6097

[1, 1, 3, 1, 6, 15, 1, 9, 42, 112, 1, 12, 81, 377, 1128, 1, 15, 132, 855, 4248, 14373, 1, 18, 195, 1606, 10758, 58269, 221952, 1, 21, 270, 2690, 22416, 159633, 947117, 4029915, 1, 24, 357, 4167, 41340, 359616, 2750067, 17848872, 84135510, 1, 27, 456, 6097]

cp's OEIS Frontend

A187120 Triangle, read by rows, where row n equals the coefficients of y^k in R_{n-1}(y+y^2) for k=3..n, where R_n(y) is the n-th row polynomial in y for n>=3 with R_3(y)=y^3.

Table of values

List of values