n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 17 |
4 | 98 |
5 | 882 |
6 | 7812 |
7 | 78129 |
8 | 815474 |
9 | 8955650 |
10 | 101869508 |
11 | 1194964498 |
12 | 14374530436 |
13 | 176681194276 |
14 | 2212121332488 |
15 | 28145258688369 |
16 | 363177582488274 |
17 | 4745064935840178 |
18 | 62687665026816228 |
19 | 836447728509168930 |
20 | 11261240896657686660 |
21 | 152847558411986548260 |
[1,1,2,17,98,882,7812,78129,815474,8955650, 101869508,1194964498,14374530436,176681194276, 2212121332488,28145258688369,363177582488274, 4745064935840178,62687665026816228, 836447728509168930,11261240896657686660, 152847558411986548260] |