n | a(n) |
---|---|
2 | 2 |
3 | 9 |
4 | 34 |
5 | 119 |
6 | 401 |
7 | 1316 |
8 | 4247 |
9 | 13532 |
10 | 42712 |
11 | 133816 |
12 | 416770 |
13 | 1291731 |
14 | 3987444 |
15 | 12266845 |
16 | 37627230 |
17 | 115125955 |
18 | 351467506 |
19 | 1070908135 |
20 | 3257389088 |
21 | 9892759091 |
22 | 30002923380 |
23 | 90879555521 |
24 | 274963755791 |
25 | 831064788976 |
[2,9,34,119,401,1316,4247,13532,42712,133816, 416770,1291731,3987444,12266845,37627230, 115125955,351467506,1070908135,3257389088, 9892759091,30002923380,90879555521,274963755791, 831064788976] |