n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 9 |
5 | 26 |
6 | 77 |
7 | 232 |
8 | 725 |
9 | 2299 |
10 | 7415 |
11 | 24223 |
12 | 79983 |
13 | 266553 |
14 | 895333 |
15 | 3028093 |
16 | 10303085 |
17 | 35243330 |
18 | 121128329 |
19 | 418080561 |
20 | 1448564695 |
21 | 5036434577 |
22 | 17566314287 |
23 | 61445833012 |
24 | 215503978367 |
25 | 757666696926 |
26 | 2669811026147 |
27 | 9427368738487 |
28 | 33353695100085 |
29 | 118217920021287 |
[1,1,1,4,9,26,77,232,725,2299,7415,24223,79983, 266553,895333,3028093,10303085,35243330,121128329, 418080561,1448564695,5036434577,17566314287, 61445833012,215503978367,757666696926, 2669811026147,9427368738487,33353695100085, 118217920021287] |