n | a(n) |
---|---|
0 | 1 |
1 | 15 |
2 | 128 |
3 | 815 |
4 | 4289 |
5 | 19663 |
6 | 81057 |
7 | 306799 |
8 | 1081986 |
9 | 3594142 |
10 | 11338690 |
11 | 34193246 |
12 | 99080387 |
13 | 277046893 |
14 | 750192227 |
15 | 1973050940 |
16 | 5053026949 |
17 | 12628736331 |
18 | 30859262181 |
19 | 73849589786 |
20 | 173333118663 |
21 | 399528823032 |
22 | 905418038792 |
23 | 2019454523623 |
24 | 4437187104779 |
[1,15,128,815,4289,19663,81057,306799,1081986, 3594142,11338690,34193246,99080387,277046893, 750192227,1973050940,5053026949,12628736331, 30859262181,73849589786,173333118663,399528823032, 905418038792,2019454523623,4437187104779] |