n | a(n) |
---|---|
0 | 2 |
1 | 6 |
2 | 17 |
3 | 48 |
4 | 135 |
5 | 379 |
6 | 1064 |
7 | 2987 |
8 | 8385 |
9 | 23538 |
10 | 66074 |
11 | 185477 |
12 | 520654 |
13 | 1461532 |
14 | 4102678 |
15 | 11516659 |
16 | 32328502 |
17 | 90749586 |
18 | 254743859 |
19 | 715093440 |
20 | 2007344278 |
21 | 5634831512 |
22 | 15817578736 |
23 | 44401646533 |
24 | 124640202381 |
25 | 349878467638 |
26 | 982146528794 |
27 | 2756991050447 |
[2,6,17,48,135,379,1064,2987,8385,23538,66074, 185477,520654,1461532,4102678,11516659,32328502, 90749586,254743859,715093440,2007344278, 5634831512,15817578736,44401646533,124640202381, 349878467638,982146528794,2756991050447] |