n | a(n) |
---|---|
0 | 1 |
1 | 13 |
2 | 115 |
3 | 865 |
4 | 5971 |
5 | 39193 |
6 | 249355 |
7 | 1555105 |
8 | 9573091 |
9 | 58428073 |
10 | 354585595 |
11 | 2143759345 |
12 | 12928070611 |
13 | 77832076153 |
14 | 468051849835 |
15 | 2812563019585 |
16 | 16892428846531 |
17 | 101422905135433 |
18 | 608811146458075 |
19 | 3653962903591825 |
20 | 21928165007708851 |
21 | 131586550851237913 |
[1,13,115,865,5971,39193,249355,1555105,9573091, 58428073,354585595,2143759345,12928070611, 77832076153,468051849835,2812563019585, 16892428846531,101422905135433,608811146458075, 3653962903591825,21928165007708851, 131586550851237913] |