n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 37 |
5 | 264 |
6 | 2433 |
7 | 27913 |
8 | 386906 |
9 | 6346119 |
10 | 121159373 |
11 | 2655174768 |
12 | 66028903633 |
13 | 1845579100993 |
14 | 57506847262162 |
15 | 1983312152411351 |
16 | 75238783332550789 |
17 | 3122408658986242072 |
18 | 141063757638078429489 |
[1,1,2,7,37,264,2433,27913,386906,6346119, 121159373,2655174768,66028903633,1845579100993, 57506847262162,1983312152411351,75238783332550789, 3122408658986242072,141063757638078429489] |