n | a(n) |
---|---|
0 | 1 |
1 | 16 |
2 | 152 |
3 | 1088 |
4 | 6460 |
5 | 33440 |
6 | 155584 |
7 | 663936 |
8 | 2636326 |
9 | 9845040 |
10 | 34861152 |
11 | 117809728 |
12 | 381946360 |
13 | 1193074144 |
14 | 3603543040 |
15 | 10556065152 |
16 | 30068145905 |
17 | 83466484112 |
18 | 226236086512 |
19 | 599785472000 |
20 | 1557643542308 |
21 | 3967888347232 |
22 | 9926348625408 |
23 | 24413219138816 |
[1,16,152,1088,6460,33440,155584,663936,2636326, 9845040,34861152,117809728,381946360,1193074144, 3603543040,10556065152,30068145905,83466484112, 226236086512,599785472000,1557643542308, 3967888347232,9926348625408,24413219138816] |