n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 9 |
4 | 16 |
5 | 85 |
6 | 876 |
7 | 2359 |
8 | 11320 |
9 | 86265 |
10 | 2064700 |
11 | 6086971 |
12 | 37979844 |
13 | 226139797 |
14 | 2607277050 |
15 | 117848675715 |
16 | 402264826576 |
17 | 2747761713745 |
18 | 18051206547132 |
19 | 155733808506211 |
20 | 2301810017460220 |
21 | 187092586844572941 |
22 | 714557570758041802 |
23 | 5548996853444210827 |
[1,1,2,9,16,85,876,2359,11320,86265,2064700, 6086971,37979844,226139797,2607277050, 117848675715,402264826576,2747761713745, 18051206547132,155733808506211,2301810017460220, 187092586844572941,714557570758041802, 5548996853444210827] |