A217364 - cp's OEIS frontend

A217364 a(n) = 2^nbinomial(5n, n)/(4*n+1).

n	a(n)
0	1
1	2
2	20
3	280
4	4560
5	80960
6	1520064
7	29680640
8	596593920
9	12262581760
10	256556410880
11	5445566730240
12	116974976102400
13	2538140268625920
14	55548588652625920
15	1224777962595287040
16	27180522769369333760
17	606648758810237337600

[1, 2, 20, 280, 4560, 80960, 1520064, 29680640, 596593920, 12262581760, 256556410880, 5445566730240, 116974976102400, 2538140268625920, 55548588652625920, 1224777962595287040, 27180522769369333760, 606648758810237337600]

cp's OEIS Frontend

A217364 a(n) = 2^nbinomial(5n, n)/(4*n+1).

Table of values

List of values

cp's OEIS Frontend

A217364 a(n) = 2^n*binomial(5*n, n)/(4*n+1).

Table of values

List of values

A217364 a(n) = 2^nbinomial(5n, n)/(4*n+1).