n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 8 |
4 | 26 |
5 | 56 |
6 | 194 |
7 | 832 |
8 | 2866 |
9 | 7904 |
10 | 30690 |
11 | 137000 |
12 | 497706 |
13 | 1491512 |
14 | 6041602 |
15 | 27557184 |
16 | 102985186 |
17 | 321675648 |
18 | 1333006018 |
19 | 6160815624 |
20 | 23426000186 |
21 | 75016874488 |
22 | 315357132994 |
23 | 1470462300160 |
24 | 5656904907026 |
25 | 18419315779552 |
26 | 78201118018466 |
27 | 366962271138472 |
[1,1,2,8,26,56,194,832,2866,7904,30690,137000, 497706,1491512,6041602,27557184,102985186, 321675648,1333006018,6160815624,23426000186, 75016874488,315357132994,1470462300160, 5656904907026,18419315779552,78201118018466, 366962271138472] |