n | a(n) |
---|---|
0 | 1 |
1 | 13 |
2 | 98 |
3 | 560 |
4 | 2688 |
5 | 11424 |
6 | 44352 |
7 | 160512 |
8 | 549120 |
9 | 1793792 |
10 | 5637632 |
11 | 17145856 |
12 | 50692096 |
13 | 146227200 |
14 | 412778496 |
15 | 1143078912 |
16 | 3111714816 |
17 | 8341487616 |
18 | 22052208640 |
19 | 57567870976 |
20 | 148562247680 |
21 | 379364311040 |
22 | 959384125440 |
[1,13,98,560,2688,11424,44352,160512,549120, 1793792,5637632,17145856,50692096,146227200, 412778496,1143078912,3111714816,8341487616, 22052208640,57567870976,148562247680,379364311040, 959384125440] |