n | a(n) |
---|---|
1 | 2 |
2 | 20 |
3 | 143 |
4 | 986 |
5 | 6764 |
6 | 46367 |
7 | 317810 |
8 | 2178308 |
9 | 14930351 |
10 | 102334154 |
11 | 701408732 |
12 | 4807526975 |
13 | 32951280098 |
14 | 225851433716 |
15 | 1548008755919 |
16 | 10610209857722 |
17 | 72723460248140 |
18 | 498454011879263 |
19 | 3416454622906706 |
20 | 23416728348467684 |
21 | 160500643816367087 |
[2,20,143,986,6764,46367,317810,2178308,14930351, 102334154,701408732,4807526975,32951280098, 225851433716,1548008755919,10610209857722, 72723460248140,498454011879263,3416454622906706, 23416728348467684,160500643816367087] |