n | a(n) |
---|---|
0 | 0 |
1 | 3 |
2 | 18 |
3 | 118 |
4 | 829 |
5 | 6115 |
6 | 46736 |
7 | 366912 |
8 | 2941528 |
9 | 23981628 |
10 | 198224910 |
11 | 1657364566 |
12 | 13992405626 |
13 | 119118427610 |
14 | 1021399476720 |
15 | 8813544248100 |
16 | 76475285228304 |
17 | 666865500290884 |
18 | 5840843616021192 |
19 | 51361847992315320 |
20 | 453282040123194425 |
21 | 4013440075484640675 |
[0,3,18,118,829,6115,46736,366912,2941528, 23981628,198224910,1657364566,13992405626, 119118427610,1021399476720,8813544248100, 76475285228304,666865500290884,5840843616021192, 51361847992315320,453282040123194425, 4013440075484640675] |