n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 40 |
3 | 292 |
4 | 2308 |
5 | 19580 |
6 | 177044 |
7 | 1696572 |
8 | 17148916 |
9 | 182114972 |
10 | 2024979604 |
11 | 23506175868 |
12 | 284125820724 |
13 | 3567957972316 |
14 | 46454893734612 |
15 | 625979771144764 |
16 | 8715626185644916 |
17 | 125200337417147932 |
18 | 1853095248414187796 |
19 | 28225529312569364732 |
20 | 441925530173009732532 |
[1,6,40,292,2308,19580,177044,1696572,17148916, 182114972,2024979604,23506175868,284125820724, 3567957972316,46454893734612,625979771144764, 8715626185644916,125200337417147932, 1853095248414187796,28225529312569364732, 441925530173009732532] |