n | a(n) |
---|---|
2 | 12 |
3 | 198 |
4 | 4608 |
5 | 53730 |
6 | 378252 |
7 | 1909236 |
8 | 7628544 |
9 | 25628076 |
10 | 75297420 |
11 | 198807114 |
12 | 481029120 |
13 | 1082267550 |
14 | 2289691404 |
15 | 4595197320 |
16 | 8809614336 |
17 | 16225724664 |
18 | 28845544716 |
19 | 49690719342 |
20 | 83218759680 |
21 | 135872231418 |
22 | 216792905868 |
23 | 338738351292 |
24 | 519244496640 |
25 | 782084374500 |
[12,198,4608,53730,378252,1909236,7628544, 25628076,75297420,198807114,481029120,1082267550, 2289691404,4595197320,8809614336,16225724664, 28845544716,49690719342,83218759680,135872231418, 216792905868,338738351292,519244496640, 782084374500] |