n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 4 |
4 | 12 |
5 | 37 |
6 | 119 |
7 | 390 |
8 | 1307 |
9 | 4460 |
10 | 15452 |
11 | 54207 |
12 | 192170 |
13 | 687386 |
14 | 2477810 |
15 | 8992007 |
16 | 32825653 |
17 | 120460613 |
18 | 444125661 |
19 | 1644324767 |
20 | 6111002752 |
21 | 22789116600 |
22 | 85251100275 |
23 | 319826371389 |
24 | 1203008722282 |
25 | 4536009027311 |
26 | 17141555233270 |
[1,1,2,4,12,37,119,390,1307,4460,15452,54207, 192170,687386,2477810,8992007,32825653,120460613, 444125661,1644324767,6111002752,22789116600, 85251100275,319826371389,1203008722282, 4536009027311,17141555233270] |