A104268 - cp's OEIS frontend

A104268 a(n) = 24^(n-1) - (3n-1)/(2n+2)C(2n,n).

n	a(n)
1	1
2	3
3	12
4	51
5	218
6	926
7	3902
8	16323
9	67866
10	280746
11	1156576
12	4748398
13	19439332
14	79391708
15	323584322
16	1316578403
17	5348814842
18	21702312818
19	87955584152
20	356114261498
21	1440568977932
22	5822909703908
23	23520345224732

[1, 3, 12, 51, 218, 926, 3902, 16323, 67866, 280746, 1156576, 4748398, 19439332, 79391708, 323584322, 1316578403, 5348814842, 21702312818, 87955584152, 356114261498, 1440568977932, 5822909703908, 23520345224732]

cp's OEIS Frontend

A104268 a(n) = 24^(n-1) - (3n-1)/(2n+2)C(2n,n).

Table of values

List of values

cp's OEIS Frontend

A104268 a(n) = 2*4^(n-1) - (3n-1)/(2n+2)*C(2n,n).

Table of values

List of values

A104268 a(n) = 24^(n-1) - (3n-1)/(2n+2)C(2n,n).