n | a(n) |
---|---|
6 | 90 |
7 | 630 |
8 | 2940 |
9 | 11508 |
10 | 40950 |
11 | 137610 |
12 | 445896 |
13 | 1410552 |
14 | 4390386 |
15 | 13514046 |
16 | 41278068 |
17 | 125405532 |
18 | 379557198 |
19 | 1145747538 |
20 | 3452182656 |
21 | 10388002848 |
22 | 31230066186 |
23 | 93828607686 |
24 | 281775226860 |
25 | 845929656900 |
26 | 2539047258150 |
27 | 7619759016090 |
28 | 22864712861880 |
29 | 68605412870088 |
[90,630,2940,11508,40950,137610,445896,1410552, 4390386,13514046,41278068,125405532,379557198, 1145747538,3452182656,10388002848,31230066186, 93828607686,281775226860,845929656900, 2539047258150,7619759016090,22864712861880, 68605412870088] |