A002802 - cp's OEIS frontend

A002802 a(n) = (2n+3)!/(6n!*(n+1)!).

n	a(n)
0	1
1	10
2	70
3	420
4	2310
5	12012
6	60060
7	291720
8	1385670
9	6466460
10	29745716
11	135207800
12	608435100
13	2714556600
14	12021607800
15	52895074320
16	231415950150
17	1007340018300
18	4365140079300
19	18839025605400
20	81007810103220
21	347176329013800
22	1483389769422600

[1, 10, 70, 420, 2310, 12012, 60060, 291720, 1385670, 6466460, 29745716, 135207800, 608435100, 2714556600, 12021607800, 52895074320, 231415950150, 1007340018300, 4365140079300, 18839025605400, 81007810103220, 347176329013800, 1483389769422600]

cp's OEIS Frontend

A002802 a(n) = (2n+3)!/(6n!*(n+1)!).

Table of values

List of values

cp's OEIS Frontend

A002802 a(n) = (2*n+3)!/(6*n!*(n+1)!).

Table of values

List of values

A002802 a(n) = (2n+3)!/(6n!*(n+1)!).