A191585 - cp's OEIS frontend

A191585 Central coefficients of the Riordan matrix (1/(1-3*x^2),x/(1-x)) (A191582).

n	a(n)
0	1
1	1
2	6
3	19
4	74
5	276
6	1056
7	4047
8	15606
9	60382
10	234356
11	911802
12	3554864
13	13883650
14	54304788
15	212687199
16	833958918
17	3273341382
18	12859792932
19	50562992490
20	198954466524
21	783371113152
22	3086377703184
23	12166795814166
24	47987669811276
25	189361785529476

[1, 1, 6, 19, 74, 276, 1056, 4047, 15606, 60382, 234356, 911802, 3554864, 13883650, 54304788, 212687199, 833958918, 3273341382, 12859792932, 50562992490, 198954466524, 783371113152, 3086377703184, 12166795814166, 47987669811276, 189361785529476]

cp's OEIS Frontend

A191585 Central coefficients of the Riordan matrix (1/(1-3*x^2),x/(1-x)) (A191582).

Table of values

List of values