n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 65 |
6 | 376 |
7 | 2613 |
8 | 20761 |
9 | 184756 |
10 | 1816330 |
11 | 19526217 |
12 | 227588213 |
13 | 2855033988 |
14 | 38311846704 |
15 | 547128228043 |
16 | 8279365967056 |
17 | 132259968568859 |
18 | 2223048616707842 |
19 | 39199883209336095 |
20 | 723269314782624612 |
[1,2,2,5,14,65,376,2613,20761,184756,1816330, 19526217,227588213,2855033988,38311846704, 547128228043,8279365967056,132259968568859, 2223048616707842,39199883209336095, 723269314782624612] |