n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 43 |
6 | 145 |
7 | 536 |
8 | 2157 |
9 | 9371 |
10 | 43630 |
11 | 216397 |
12 | 1137703 |
13 | 6313675 |
14 | 36848992 |
15 | 225464838 |
16 | 1442216870 |
17 | 9620746697 |
18 | 66781675113 |
19 | 481413175433 |
20 | 3597627996006 |
21 | 27825925290597 |
22 | 222422033403527 |
23 | 1834910286704787 |
24 | 15603508329713182 |
25 | 136616625732498989 |
[1,1,2,5,14,43,145,536,2157,9371,43630,216397, 1137703,6313675,36848992,225464838,1442216870, 9620746697,66781675113,481413175433,3597627996006, 27825925290597,222422033403527,1834910286704787, 15603508329713182,136616625732498989] |