A386876 - cp's OEIS frontend

A386876 a(n) = (1/2) * (3*n)! / n!^3 for n > 0, a(0) = 1.

n	a(n)
0	1
1	3
2	45
3	840
4	17325
5	378378
6	8576568
7	199536480
8	4732755885
9	113936715750
10	2775498395670
11	68263497731520
12	1692365881260600
13	42239049036433200
14	1060286332955364000
15	26747489892687315840
16	677672732203007541165
17	17234929348415589714750
18	439809863742901530128250

[1, 3, 45, 840, 17325, 378378, 8576568, 199536480, 4732755885, 113936715750, 2775498395670, 68263497731520, 1692365881260600, 42239049036433200, 1060286332955364000, 26747489892687315840, 677672732203007541165, 17234929348415589714750, 439809863742901530128250]

cp's OEIS Frontend

A386876 a(n) = (1/2) * (3*n)! / n!^3 for n > 0, a(0) = 1.

Table of values

List of values