n | a(n) |
---|---|
2 | 1 |
3 | 10 |
4 | 71 |
5 | 444 |
6 | 2616 |
7 | 14938 |
8 | 83821 |
9 | 465654 |
10 | 2572166 |
11 | 14164320 |
12 | 77886902 |
13 | 428113940 |
14 | 2353823912 |
15 | 12950837432 |
16 | 71326701751 |
17 | 393289209772 |
18 | 2171308560036 |
19 | 12003376308370 |
20 | 66445540183348 |
21 | 368304502202306 |
22 | 2044177115127750 |
[1,10,71,444,2616,14938,83821,465654,2572166, 14164320,77886902,428113940,2353823912, 12950837432,71326701751,393289209772, 2171308560036,12003376308370,66445540183348, 368304502202306,2044177115127750] |