A006419 - cp's OEIS frontend

A006419 a(n) = 2^(2n+1) - C(2n+3,n+1) + C(2*n+1,n).

n	a(n)
0	0
1	1
2	7
3	37
4	176
5	794
6	3473
7	14893
8	63004
9	263950
10	1097790
11	4540386
12	18696432
13	76717268
14	313889477
15	1281220733
16	5219170052
17	21224674118
18	86188320962
19	349550141078
20	1416102710912
21	5731427140268
22	23177285611082
23	93655986978002
24	378195990166136
25	1526289367335244

[0, 1, 7, 37, 176, 794, 3473, 14893, 63004, 263950, 1097790, 4540386, 18696432, 76717268, 313889477, 1281220733, 5219170052, 21224674118, 86188320962, 349550141078, 1416102710912, 5731427140268, 23177285611082, 93655986978002, 378195990166136, 1526289367335244]

cp's OEIS Frontend

A006419 a(n) = 2^(2n+1) - C(2n+3,n+1) + C(2*n+1,n).

Table of values

List of values

cp's OEIS Frontend

A006419 a(n) = 2^(2*n+1) - C(2*n+3,n+1) + C(2*n+1,n).

Table of values

List of values

A006419 a(n) = 2^(2n+1) - C(2n+3,n+1) + C(2*n+1,n).