n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 21 |
3 | 168 |
4 | 1425 |
5 | 12483 |
6 | 111594 |
7 | 1011636 |
8 | 9264753 |
9 | 85510590 |
10 | 794087151 |
11 | 7410887718 |
12 | 69446624910 |
13 | 653019755430 |
14 | 6158495001960 |
15 | 58226492157048 |
16 | 551725482707505 |
17 | 5238008159399163 |
18 | 49814314319342424 |
19 | 474467729545936650 |
20 | 4525387365179378775 |
[1,3,21,168,1425,12483,111594,1011636,9264753, 85510590,794087151,7410887718,69446624910, 653019755430,6158495001960,58226492157048, 551725482707505,5238008159399163, 49814314319342424,474467729545936650, 4525387365179378775] |