n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 20 |
4 | 149 |
5 | 467 |
6 | 237385 |
7 | 237852 |
8 | 1426645 |
9 | 7371077 |
10 | 8797722 |
11 | 16168799 |
12 | 24966521 |
13 | 66101841 |
14 | 91068362 |
15 | 157170203 |
16 | 3863153234 |
17 | 4020323437 |
18 | 7883476671 |
19 | 11903800108 |
20 | 43594876995 |
21 | 142688431093 |
22 | 4324247809785 |
23 | 17439679670233 |
24 | 178721044512115 |
25 | 28255364712584403 |
[1,2,9,20,149,467,237385,237852,1426645,7371077, 8797722,16168799,24966521,66101841,91068362, 157170203,3863153234,4020323437,7883476671, 11903800108,43594876995,142688431093, 4324247809785,17439679670233,178721044512115, 28255364712584403] |