n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 91 |
4 | 240 |
5 | 840 |
6 | 989 |
7 | 5396 |
8 | 117719 |
9 | 312120 |
10 | 1089720 |
11 | 1284121 |
12 | 7003804 |
13 | 152799571 |
14 | 405130920 |
15 | 1414456320 |
16 | 1666787669 |
17 | 9090932396 |
18 | 198333725039 |
19 | 525859622640 |
20 | 1835963213040 |
21 | 2163489110641 |
22 | 11800023246004 |
23 | 257437022301451 |
[1,4,91,240,840,989,5396,117719,312120,1089720, 1284121,7003804,152799571,405130920,1414456320, 1666787669,9090932396,198333725039,525859622640, 1835963213040,2163489110641,11800023246004, 257437022301451] |