n | a(n) |
---|---|
0 | 1 |
1 | 7 |
2 | 28 |
3 | 476 |
4 | 1386 |
5 | 8106 |
6 | 117936 |
7 | 322764 |
8 | 1440579 |
9 | 6172495 |
10 | 99773646 |
11 | 232110704 |
12 | 981073576 |
13 | 3329628176 |
14 | 14040114012 |
15 | 224848217580 |
16 | 490210909629 |
17 | 1828885568055 |
18 | 5750093241172 |
19 | 20040621544916 |
20 | 69910543160794 |
21 | 1238596672832718 |
22 | 2451410591056280 |
23 | 8705347941656016 |
[1,7,28,476,1386,8106,117936,322764,1440579, 6172495,99773646,232110704,981073576,3329628176, 14040114012,224848217580,490210909629, 1828885568055,5750093241172,20040621544916, 69910543160794,1238596672832718,2451410591056280, 8705347941656016] |