n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 8 |
4 | 46 |
5 | 333 |
6 | 2822 |
7 | 26884 |
8 | 280778 |
9 | 3162129 |
10 | 37962174 |
11 | 481796692 |
12 | 6424120440 |
13 | 89561323131 |
14 | 1300606338522 |
15 | 19614272779492 |
16 | 306422062160964 |
17 | 4948682216714809 |
18 | 82474329755007710 |
19 | 1416291364674413764 |
20 | 25027636488359996744 |
21 | 454585893218323184316 |
[1,1,2,8,46,333,2822,26884,280778,3162129, 37962174,481796692,6424120440,89561323131, 1300606338522,19614272779492,306422062160964, 4948682216714809,82474329755007710, 1416291364674413764,25027636488359996744, 454585893218323184316] |