n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 34 |
4 | 164 |
5 | 878 |
6 | 5136 |
7 | 32490 |
8 | 220476 |
9 | 1594470 |
10 | 12223016 |
11 | 98876322 |
12 | 840804820 |
13 | 7491247006 |
14 | 69730182720 |
15 | 676390547034 |
16 | 6821988655468 |
17 | 71398971351510 |
18 | 774032400213336 |
19 | 8677733804696594 |
20 | 100459693769214980 |
21 | 1199306075189097230 |
22 | 14746332963835756400 |
23 | 186534818943430728906 |
[1,2,8,34,164,878,5136,32490,220476,1594470, 12223016,98876322,840804820,7491247006, 69730182720,676390547034,6821988655468, 71398971351510,774032400213336,8677733804696594, 100459693769214980,1199306075189097230, 14746332963835756400,186534818943430728906] |