n | a(n) |
---|---|
1 | 24 |
2 | 90 |
3 | 324 |
4 | 1188 |
5 | 4320 |
6 | 15768 |
7 | 57456 |
8 | 209520 |
9 | 763776 |
10 | 2784672 |
11 | 10152000 |
12 | 37012032 |
13 | 134936064 |
14 | 491944320 |
15 | 1793505024 |
16 | 6538675968 |
17 | 23838382080 |
18 | 86908819968 |
19 | 316847932416 |
20 | 1155148784640 |
21 | 4211385163776 |
22 | 15353663035392 |
23 | 55975637053440 |
[24,90,324,1188,4320,15768,57456,209520,763776, 2784672,10152000,37012032,134936064,491944320, 1793505024,6538675968,23838382080,86908819968, 316847932416,1155148784640,4211385163776, 15353663035392,55975637053440] |