n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 24 |
5 | 101 |
6 | 472 |
7 | 2507 |
8 | 14784 |
9 | 96361 |
10 | 687392 |
11 | 5332207 |
12 | 44694144 |
13 | 402663821 |
14 | 3880880512 |
15 | 39848805107 |
16 | 434306095104 |
17 | 5007757446481 |
18 | 60907946680832 |
19 | 779345606053207 |
20 | 10465549612529664 |
21 | 147168296199468341 |
22 | 2162785172079204352 |
23 | 33155700678534788507 |
24 | 529311396083558989824 |
[0,1,2,7,24,101,472,2507,14784,96361,687392, 5332207,44694144,402663821,3880880512,39848805107, 434306095104,5007757446481,60907946680832, 779345606053207,10465549612529664, 147168296199468341,2162785172079204352, 33155700678534788507,529311396083558989824] |