n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 4 |
4 | 11 |
5 | 38 |
6 | 151 |
7 | 655 |
8 | 3112 |
9 | 16000 |
10 | 88285 |
11 | 519592 |
12 | 3244512 |
13 | 21400146 |
14 | 148530179 |
15 | 1081222613 |
16 | 8231314455 |
17 | 65369494593 |
18 | 540322688516 |
19 | 4639020151529 |
20 | 41295634331020 |
21 | 380514484523095 |
22 | 3623898600072459 |
23 | 35622399584611476 |
24 | 360965731323718242 |
[1,1,1,4,11,38,151,655,3112,16000,88285,519592, 3244512,21400146,148530179,1081222613,8231314455, 65369494593,540322688516,4639020151529, 41295634331020,380514484523095,3623898600072459, 35622399584611476,360965731323718242] |