n | a(n) |
---|---|
1 | 3 |
2 | 6 |
3 | 28 |
4 | 156 |
5 | 948 |
6 | 6206 |
7 | 42504 |
8 | 301548 |
9 | 2195100 |
10 | 16307598 |
11 | 123128940 |
12 | 942125110 |
13 | 7289062320 |
14 | 56926578912 |
15 | 448186662992 |
16 | 3553364598786 |
17 | 28345260090444 |
18 | 227337020914322 |
19 | 1832102040838776 |
20 | 14828608892376288 |
21 | 120485979704314764 |
22 | 982422914174633154 |
23 | 8036158136627878572 |
[3,6,28,156,948,6206,42504,301548,2195100, 16307598,123128940,942125110,7289062320, 56926578912,448186662992,3553364598786, 28345260090444,227337020914322,1832102040838776, 14828608892376288,120485979704314764, 982422914174633154,8036158136627878572] |