A386517 - cp's OEIS frontend

A386517 a(n) = 60binomial(3n,n)/(n+2).

n	a(n)
0	30
1	60
2	225
3	1008
4	4950
5	25740
6	139230
7	775200
8	4412826
9	25564500
10	150225075
11	893246400
12	5364333000
13	32489701776
14	198225859050
15	1217179149120
16	7516163045490
17	46645481326500
18	290779045735815
19	1819954198062000
20	11432303197651350
21	72050701049642700
22	455457919954401000

[30, 60, 225, 1008, 4950, 25740, 139230, 775200, 4412826, 25564500, 150225075, 893246400, 5364333000, 32489701776, 198225859050, 1217179149120, 7516163045490, 46645481326500, 290779045735815, 1819954198062000, 11432303197651350, 72050701049642700, 455457919954401000]

cp's OEIS Frontend

A386517 a(n) = 60binomial(3n,n)/(n+2).

Table of values

List of values

cp's OEIS Frontend

A386517 a(n) = 60*binomial(3*n,n)/(n+2).

Table of values

List of values

A386517 a(n) = 60binomial(3n,n)/(n+2).