n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | 3 |
5 | 6 |
6 | 26 |
7 | 71 |
8 | 413 |
9 | 1456 |
10 | 10576 |
11 | 45541 |
12 | 397023 |
13 | 2020656 |
14 | 20551376 |
15 | 120686411 |
16 | 1402815833 |
17 | 9336345856 |
18 | 122087570176 |
19 | 908138776681 |
20 | 13194844482843 |
21 | 108480272749056 |
22 | 1733786041150976 |
23 | 15611712012050351 |
24 | 272197308765744053 |
25 | 2664103110372192256 |
[1,1,1,1,3,6,26,71,413,1456,10576,45541,397023, 2020656,20551376,120686411,1402815833,9336345856, 122087570176,908138776681,13194844482843, 108480272749056,1733786041150976, 15611712012050351,272197308765744053, 2664103110372192256] |