n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 32 |
4 | 100 |
5 | 308 |
6 | 940 |
7 | 2852 |
8 | 8620 |
9 | 25988 |
10 | 78220 |
11 | 235172 |
12 | 706540 |
13 | 2121668 |
14 | 6369100 |
15 | 19115492 |
16 | 57362860 |
17 | 172121348 |
18 | 516429580 |
19 | 1549419812 |
20 | 4648521580 |
21 | 13946089028 |
22 | 41839315660 |
23 | 125520044132 |
[1,3,10,32,100,308,940,2852,8620,25988,78220, 235172,706540,2121668,6369100,19115492,57362860, 172121348,516429580,1549419812,4648521580, 13946089028,41839315660,125520044132] |