A361040 - cp's OEIS frontend

A361040 a(n) = 420(3n)!/(n!(2n + 3)!).

n	a(n)
0	70
1	21
2	30
3	70
4	210
5	735
6	2856
7	11970
8	53130
9	246675
10	1187550
11	5890248
12	29954680
13	155602020
14	823184880
15	4424618730
16	24116031162
17	133072694475
18	742405558650
19	4182821562150
20	23776769743650
21	136248095712855
22	786482994679200

[70, 21, 30, 70, 210, 735, 2856, 11970, 53130, 246675, 1187550, 5890248, 29954680, 155602020, 823184880, 4424618730, 24116031162, 133072694475, 742405558650, 4182821562150, 23776769743650, 136248095712855, 786482994679200]

cp's OEIS Frontend

A361040 a(n) = 420(3n)!/(n!(2n + 3)!).

Table of values

List of values

cp's OEIS Frontend

A361040 a(n) = 420*(3*n)!/(n!*(2*n + 3)!).

Table of values

List of values

A361040 a(n) = 420(3n)!/(n!(2n + 3)!).