n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 10 |
5 | 26 |
6 | 76 |
7 | 239 |
8 | 753 |
9 | 2540 |
10 | 8572 |
11 | 30128 |
12 | 106501 |
13 | 387844 |
14 | 1422789 |
15 | 5316121 |
16 | 20099588 |
17 | 76671429 |
18 | 296355338 |
19 | 1151184226 |
20 | 4524804463 |
21 | 17853802855 |
22 | 71134139857 |
23 | 284557313732 |
24 | 1146559570375 |
25 | 4641910594671 |
26 | 18885060480277 |
27 | 77240337339152 |
28 | 316960064504831 |
29 | 1307542974531887 |
30 | 5407643110588584 |
[1,1,2,4,10,26,76,239,753,2540,8572,30128,106501, 387844,1422789,5316121,20099588,76671429, 296355338,1151184226,4524804463,17853802855, 71134139857,284557313732,1146559570375, 4641910594671,18885060480277,77240337339152, 316960064504831,1307542974531887,5407643110588584] |