n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 46 |
3 | 652 |
4 | 10186 |
5 | 168304 |
6 | 2884456 |
7 | 50723824 |
8 | 909192538 |
9 | 16538659384 |
10 | 304391739796 |
11 | 5655971294824 |
12 | 105929883322576 |
13 | 1997228410630912 |
14 | 37871584674309376 |
15 | 721672204654077952 |
16 | 13811327854028171098 |
17 | 265324110145941691912 |
18 | 5114208160758838538044 |
19 | 98874597697991698311832 |
20 | 1916741738060370782929036 |
[1,4,46,652,10186,168304,2884456,50723824, 909192538,16538659384,304391739796,5655971294824, 105929883322576,1997228410630912, 37871584674309376,721672204654077952, 13811327854028171098,265324110145941691912, 5114208160758838538044,98874597697991698311832, 1916741738060370782929036] |