n | a(n) |
---|---|
1 | 1 |
2 | 21 |
3 | 148 |
4 | 5208 |
5 | 37465 |
6 | 1322685 |
7 | 9515836 |
8 | 335956656 |
9 | 2416984753 |
10 | 85331667813 |
11 | 613904611300 |
12 | 21673907667720 |
13 | 155929354285321 |
14 | 5505087215932941 |
15 | 39605442083860108 |
16 | 1398270478939299168 |
17 | 10059626359946181985 |
18 | 355155196563366055605 |
19 | 2555105489984246363956 |
[1,21,148,5208,37465,1322685,9515836,335956656, 2416984753,85331667813,613904611300, 21673907667720,155929354285321,5505087215932941, 39605442083860108,1398270478939299168, 10059626359946181985,355155196563366055605, 2555105489984246363956] |