n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 9 |
3 | 51 |
4 | 350 |
5 | 2799 |
6 | 25373 |
7 | 255854 |
8 | 2831177 |
9 | 34023919 |
10 | 440414146 |
11 | 6099346455 |
12 | 89873849705 |
13 | 1402403637418 |
14 | 23081230257449 |
15 | 399284248276827 |
16 | 7238080522101270 |
17 | 137125745341692863 |
18 | 2708536196071195365 |
19 | 55660194042713099510 |
20 | 1187724805063462045289 |
[1,2,9,51,350,2799,25373,255854,2831177,34023919, 440414146,6099346455,89873849705,1402403637418, 23081230257449,399284248276827,7238080522101270, 137125745341692863,2708536196071195365, 55660194042713099510,1187724805063462045289] |