n | a(n) |
---|---|
0 | 2 |
1 | 2 |
2 | 5 |
3 | 17 |
4 | 71 |
5 | 359 |
6 | 2159 |
7 | 15119 |
8 | 120959 |
9 | 1088639 |
10 | 10886399 |
11 | 119750399 |
12 | 1437004799 |
13 | 18681062399 |
14 | 261534873599 |
15 | 3923023103999 |
16 | 62768369663999 |
17 | 1067062284287999 |
18 | 19207121117183999 |
19 | 364935301226495999 |
[2,2,5,17,71,359,2159,15119,120959,1088639, 10886399,119750399,1437004799,18681062399, 261534873599,3923023103999,62768369663999, 1067062284287999,19207121117183999, 364935301226495999] |