n | a(n) |
---|---|
1 | 251991 |
2 | 678265 |
3 | 2163831 |
4 | 7794409 |
5 | 30722151 |
6 | 129866905 |
7 | 580718871 |
8 | 2719942729 |
9 | 13245504711 |
10 | 66684138745 |
11 | 345524027511 |
[251991,678265,2163831,7794409,30722151,129866905, 580718871,2719942729,13245504711,66684138745, 345524027511] |