A078820 - cp's OEIS frontend

A078820 a(n) = 20C(2n,n)(2n+1)/(n+4).

n	a(n)
0	5
1	24
2	100
3	400
4	1575
5	6160
6	24024
7	93600
8	364650
9	1421200
10	5542680
11	21633248
12	84504875
13	330372000
14	1292646000
15	5061729600
16	19835652870
17	77786874000
18	305254551000
19	1198665468000
20	4709756401350
21	18516070880736
22	72834194898000
23	286645366072000
24	1128666128908500

[5, 24, 100, 400, 1575, 6160, 24024, 93600, 364650, 1421200, 5542680, 21633248, 84504875, 330372000, 1292646000, 5061729600, 19835652870, 77786874000, 305254551000, 1198665468000, 4709756401350, 18516070880736, 72834194898000, 286645366072000, 1128666128908500]

cp's OEIS Frontend

A078820 a(n) = 20C(2n,n)(2n+1)/(n+4).

Table of values

List of values

cp's OEIS Frontend

A078820 a(n) = 20*C(2n,n)*(2n+1)/(n+4).

Table of values

List of values

A078820 a(n) = 20C(2n,n)(2n+1)/(n+4).