n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 20 |
4 | 31 |
5 | 14564 |
6 | 38239 |
7 | 69919 |
8 | 120395 |
9 | 426436 |
10 | 902596 |
11 | 7478020 |
12 | 9090220 |
13 | 6671332084 |
14 | 8114264059 |
15 | 8482227259 |
16 | 9900250996 |
17 | 2244338786836 |
18 | 2490577152964 |
19 | 2509440638591 |
20 | 2769448208395 |
21 | 7012067592220 |
[1,4,20,31,14564,38239,69919,120395,426436,902596, 7478020,9090220,6671332084,8114264059,8482227259, 9900250996,2244338786836,2490577152964, 2509440638591,2769448208395,7012067592220] |