n | a(n) |
---|---|
2 | 2 |
3 | 12 |
4 | 46 |
5 | 152 |
6 | 474 |
7 | 1444 |
8 | 4358 |
9 | 13104 |
10 | 39346 |
11 | 118076 |
12 | 354270 |
13 | 1062856 |
14 | 3188618 |
15 | 9565908 |
16 | 28697782 |
17 | 86093408 |
18 | 258280290 |
19 | 774840940 |
20 | 2324522894 |
21 | 6973568760 |
22 | 20920706362 |
23 | 62762119172 |
24 | 188286357606 |
25 | 564859072912 |
26 | 1694577218834 |
27 | 5083731656604 |
28 | 15251194969918 |
[2,12,46,152,474,1444,4358,13104,39346,118076, 354270,1062856,3188618,9565908,28697782,86093408, 258280290,774840940,2324522894,6973568760, 20920706362,62762119172,188286357606,564859072912, 1694577218834,5083731656604,15251194969918] |