n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 15 |
5 | 40 |
6 | 99 |
7 | 236 |
8 | 646 |
9 | 1584 |
10 | 4081 |
11 | 10349 |
12 | 25912 |
13 | 64722 |
14 | 160286 |
15 | 397687 |
16 | 966020 |
17 | 2371653 |
18 | 5743454 |
19 | 13810783 |
20 | 33249279 |
21 | 79400369 |
22 | 188904792 |
23 | 446408824 |
24 | 1054545693 |
25 | 2475898367 |
26 | 5787434089 |
27 | 13484174982 |
[1,1,3,8,15,40,99,236,646,1584,4081,10349,25912, 64722,160286,397687,966020,2371653,5743454, 13810783,33249279,79400369,188904792,446408824, 1054545693,2475898367,5787434089,13484174982] |