n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 8 |
3 | 24 |
4 | 88 |
5 | 400 |
6 | 2212 |
7 | 14500 |
8 | 110116 |
9 | 951076 |
10 | 9205156 |
11 | 98646436 |
12 | 1159016356 |
13 | 14808626596 |
14 | 204358994596 |
15 | 3028436306596 |
16 | 47955883346596 |
17 | 807990334802596 |
18 | 14430691329362596 |
19 | 272302801683794596 |
20 | 5412861968581970596 |
[1,3,8,24,88,400,2212,14500,110116,951076,9205156, 98646436,1159016356,14808626596,204358994596, 3028436306596,47955883346596,807990334802596, 14430691329362596,272302801683794596, 5412861968581970596] |