n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 14 |
5 | 38 |
6 | 118 |
7 | 338 |
8 | 1006 |
9 | 2990 |
10 | 8974 |
11 | 26862 |
12 | 80510 |
13 | 241390 |
14 | 723934 |
15 | 2171046 |
16 | 6512910 |
17 | 19536974 |
18 | 58608782 |
19 | 175821710 |
20 | 527470318 |
21 | 1582385678 |
22 | 4747139342 |
23 | 14241362318 |
24 | 42724100334 |
25 | 128172182990 |
26 | 384516408110 |
27 | 1153548740206 |
28 | 3460645850030 |
29 | 10381936700110 |
[0,1,2,4,14,38,118,338,1006,2990,8974,26862,80510, 241390,723934,2171046,6512910,19536974,58608782, 175821710,527470318,1582385678,4747139342, 14241362318,42724100334,128172182990,384516408110, 1153548740206,3460645850030,10381936700110] |