n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 4 |
3 | 21 |
4 | 149 |
5 | 1317 |
6 | 13985 |
7 | 173209 |
8 | 2451844 |
9 | 39044784 |
10 | 690862770 |
11 | 13446615722 |
12 | 285510978887 |
13 | 6567419023617 |
14 | 162686428939423 |
15 | 4317885767971448 |
16 | 122241788335870103 |
17 | 3677030054440996775 |
18 | 117111150680951037907 |
19 | 3937135961534144480556 |
20 | 139328182441566999124409 |
[1,1,4,21,149,1317,13985,173209,2451844,39044784, 690862770,13446615722,285510978887,6567419023617, 162686428939423,4317885767971448, 122241788335870103,3677030054440996775, 117111150680951037907,3937135961534144480556, 139328182441566999124409] |