n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 48 |
3 | 234 |
4 | 1320 |
5 | 7806 |
6 | 46692 |
7 | 279978 |
8 | 1679664 |
9 | 10077750 |
10 | 60466236 |
11 | 362797122 |
12 | 2176782408 |
13 | 13060694094 |
14 | 78364164180 |
15 | 470184984666 |
16 | 2821109907552 |
17 | 16926659444838 |
18 | 101559956668524 |
19 | 609359740010610 |
20 | 3656158440063096 |
21 | 21936950640377982 |
22 | 131621703842267268 |
[1,12,48,234,1320,7806,46692,279978,1679664, 10077750,60466236,362797122,2176782408, 13060694094,78364164180,470184984666, 2821109907552,16926659444838,101559956668524, 609359740010610,3656158440063096, 21936950640377982,131621703842267268] |