n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 11 |
3 | 50 |
4 | 271 |
5 | 1655 |
6 | 10900 |
7 | 75388 |
8 | 539295 |
9 | 3954593 |
10 | 29557251 |
11 | 224308078 |
12 | 1723659436 |
13 | 13384272660 |
14 | 104855628776 |
15 | 827760536528 |
16 | 6578127170319 |
17 | 52581460222645 |
18 | 422478996770305 |
19 | 3410174204693310 |
20 | 27640220748529799 |
21 | 224866485110361767 |
22 | 1835589569664256976 |
[1,3,11,50,271,1655,10900,75388,539295,3954593, 29557251,224308078,1723659436,13384272660, 104855628776,827760536528,6578127170319, 52581460222645,422478996770305,3410174204693310, 27640220748529799,224866485110361767, 1835589569664256976] |