n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 53 |
5 | 1305 |
6 | 177559 |
7 | 247880897 |
8 | 9252468642944 |
9 | 39211218810149955871 |
10 | 155393322265527728403643204013 |
11 | 12102963126133848174768954972642433817636369 |
[1,1,2,7,53,1305,177559,247880897,9252468642944, 39211218810149955871, 155393322265527728403643204013, 12102963126133848174768954972642433817636369] |