n | a(n) |
---|---|
1 | 1 |
2 | 15 |
3 | 248 |
4 | 4305 |
5 | 76255 |
6 | 1361520 |
7 | 24384737 |
8 | 437245935 |
9 | 7843863784 |
10 | 140737371825 |
11 | 2525326494911 |
12 | 45314438127840 |
13 | 813129752279233 |
14 | 14590988151618255 |
15 | 261824431125415640 |
16 | 4698247224097107345 |
17 | 84306614992412658847 |
18 | 1512820749915870503760 |
19 | 27146466385039244529569 |
[1,15,248,4305,76255,1361520,24384737,437245935, 7843863784,140737371825,2525326494911, 45314438127840,813129752279233,14590988151618255, 261824431125415640,4698247224097107345, 84306614992412658847,1512820749915870503760, 27146466385039244529569] |