n | a(n) |
---|---|
5 | 2 |
6 | 12 |
7 | 52 |
8 | 232 |
9 | 952 |
10 | 3888 |
11 | 15504 |
12 | 61333 |
13 | 240350 |
14 | 937508 |
15 | 3641820 |
16 | 14112560 |
17 | 54587280 |
18 | 210907168 |
19 | 814278240 |
20 | 3142611402 |
21 | 12126758436 |
22 | 46796872472 |
23 | 180619420520 |
24 | 697320058864 |
25 | 2693097842512 |
26 | 10405151052320 |
27 | 40219629005920 |
[2,12,52,232,952,3888,15504,61333,240350,937508, 3641820,14112560,54587280,210907168,814278240, 3142611402,12126758436,46796872472,180619420520, 697320058864,2693097842512,10405151052320, 40219629005920] |