n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 12 |
3 | 75 |
4 | 588 |
5 | 5043 |
6 | 44652 |
7 | 399675 |
8 | 3590508 |
9 | 32294883 |
10 | 290594892 |
11 | 2615176875 |
12 | 23536060428 |
13 | 211822949523 |
14 | 1906401762732 |
15 | 17157601515675 |
16 | 154418370594348 |
17 | 1389765206208963 |
18 | 12507886468460172 |
19 | 112570977053880075 |
20 | 1013138789998136268 |
21 | 9118249099522873203 |
[1,3,12,75,588,5043,44652,399675,3590508,32294883, 290594892,2615176875,23536060428,211822949523, 1906401762732,17157601515675,154418370594348, 1389765206208963,12507886468460172, 112570977053880075,1013138789998136268, 9118249099522873203] |