A331839 - cp's OEIS frontend

A331839 a(n) = (4^(n + 1) - 2)(2n)!.

n	a(n)
0	2
1	28
2	1488
3	182880
4	41207040
5	14856307200
6	7847004211200
7	5713142135500800
8	5484741986820096000
9	6713362606110031872000
10	10204325758699297505280000
11	18857600746080668455403520000
12	41637586170036526348967608320000
13	108257726461843735266949595136000000
14	327371366649945523117538738700288000000

[2, 28, 1488, 182880, 41207040, 14856307200, 7847004211200, 5713142135500800, 5484741986820096000, 6713362606110031872000, 10204325758699297505280000, 18857600746080668455403520000, 41637586170036526348967608320000, 108257726461843735266949595136000000, 327371366649945523117538738700288000000]

cp's OEIS Frontend

A331839 a(n) = (4^(n + 1) - 2)(2n)!.

Table of values

List of values

cp's OEIS Frontend

A331839 a(n) = (4^(n + 1) - 2)*(2*n)!.

Table of values

List of values

A331839 a(n) = (4^(n + 1) - 2)(2n)!.