n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 8 |
5 | 22 |
6 | 63 |
7 | 193 |
8 | 627 |
9 | 2143 |
10 | 7677 |
11 | 28706 |
12 | 111669 |
13 | 450529 |
14 | 1880164 |
15 | 8097765 |
16 | 35922614 |
17 | 163849371 |
18 | 767224522 |
19 | 3682984346 |
20 | 18102428784 |
21 | 91000840873 |
22 | 467393250911 |
23 | 2450438244585 |
24 | 13102651355735 |
25 | 71398380128514 |
26 | 396202573696587 |
[1,1,1,3,8,22,63,193,627,2143,7677,28706,111669, 450529,1880164,8097765,35922614,163849371, 767224522,3682984346,18102428784,91000840873, 467393250911,2450438244585,13102651355735, 71398380128514,396202573696587] |