n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 12 |
4 | 65 |
5 | 419 |
6 | 3088 |
7 | 25557 |
8 | 233687 |
9 | 2331092 |
10 | 25130877 |
11 | 290632455 |
12 | 3583432896 |
13 | 46864388137 |
14 | 647273948043 |
15 | 9406216355420 |
16 | 143356121222905 |
17 | 2284850518224363 |
18 | 37988158312023376 |
19 | 657378186247162493 |
20 | 11816449728615690079 |
21 | 220230214060016856164 |
[1,1,3,12,65,419,3088,25557,233687,2331092, 25130877,290632455,3583432896,46864388137, 647273948043,9406216355420,143356121222905, 2284850518224363,37988158312023376, 657378186247162493,11816449728615690079, 220230214060016856164] |