n | a(n) |
---|---|
5 | 12 |
6 | 108 |
7 | 600 |
8 | 2664 |
9 | 10404 |
10 | 37476 |
11 | 127920 |
12 | 420768 |
13 | 1348476 |
14 | 4242204 |
15 | 13169160 |
16 | 40490712 |
17 | 123635028 |
18 | 375623892 |
19 | 1137095520 |
20 | 3433306896 |
21 | 10347106860 |
22 | 31141984140 |
23 | 93639862200 |
24 | 281372571720 |
25 | 845074016772 |
26 | 2537235316548 |
27 | 7615933808400 |
28 | 22856659795584 |
29 | 68588501433564 |
[12,108,600,2664,10404,37476,127920,420768, 1348476,4242204,13169160,40490712,123635028, 375623892,1137095520,3433306896,10347106860, 31141984140,93639862200,281372571720,845074016772, 2537235316548,7615933808400,22856659795584, 68588501433564] |