n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 17 |
3 | 77 |
4 | 371 |
5 | 1890 |
6 | 10095 |
7 | 56040 |
8 | 320795 |
9 | 1881524 |
10 | 11250827 |
11 | 68330773 |
12 | 420314629 |
13 | 2612922694 |
14 | 16389162537 |
15 | 103587298965 |
16 | 659071002195 |
17 | 4217699773140 |
18 | 27129590096595 |
19 | 175303621195647 |
20 | 1137400502295081 |
21 | 7406899253418414 |
22 | 48396105031873197 |
23 | 317180187174490902 |
24 | 2084542632685363221 |
[1,4,17,77,371,1890,10095,56040,320795,1881524, 11250827,68330773,420314629,2612922694, 16389162537,103587298965,659071002195, 4217699773140,27129590096595,175303621195647, 1137400502295081,7406899253418414, 48396105031873197,317180187174490902, 2084542632685363221] |