n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 10 |
3 | 72 |
4 | 552 |
5 | 4593 |
6 | 40185 |
7 | 364413 |
8 | 3395217 |
9 | 32305005 |
10 | 312589540 |
11 | 3066565720 |
12 | 30430287693 |
13 | 304907935707 |
14 | 3080617021926 |
15 | 31349533179726 |
16 | 321038696185371 |
17 | 3305935381202847 |
18 | 34211612434972446 |
19 | 355605873560512974 |
20 | 3710978684625678870 |
[1,2,10,72,552,4593,40185,364413,3395217,32305005, 312589540,3066565720,30430287693,304907935707, 3080617021926,31349533179726,321038696185371, 3305935381202847,34211612434972446, 355605873560512974,3710978684625678870] |