n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 14 |
4 | 38 |
5 | 104 |
6 | 284 |
7 | 776 |
8 | 2120 |
9 | 5792 |
10 | 15824 |
11 | 43232 |
12 | 118112 |
13 | 322688 |
14 | 881600 |
15 | 2408576 |
16 | 6580352 |
17 | 17977856 |
18 | 49116416 |
19 | 134188544 |
20 | 366609920 |
21 | 1001596928 |
22 | 2736413696 |
23 | 7476021248 |
24 | 20424869888 |
25 | 55801782272 |
26 | 152453304320 |
[1,2,5,14,38,104,284,776,2120,5792,15824,43232, 118112,322688,881600,2408576,6580352,17977856, 49116416,134188544,366609920,1001596928, 2736413696,7476021248,20424869888,55801782272, 152453304320] |