n | a(n) |
---|---|
0 | 980 |
1 | 34560 |
2 | 312120 |
3 | 1548800 |
4 | 5467500 |
5 | 15482880 |
6 | 37565360 |
7 | 81285120 |
8 | 161036100 |
9 | 297440000 |
10 | 518930280 |
11 | 863516160 |
12 | 1380726620 |
13 | 2133734400 |
14 | 3201660000 |
15 | 4682055680 |
16 | 6693569460 |
17 | 9378789120 |
18 | 12907266200 |
19 | 17478720000 |
20 | 23326421580 |
21 | 30720757760 |
22 | 39972975120 |
23 | 51439104000 |
[980,34560,312120,1548800,5467500,15482880, 37565360,81285120,161036100,297440000,518930280, 863516160,1380726620,2133734400,3201660000, 4682055680,6693569460,9378789120,12907266200, 17478720000,23326421580,30720757760,39972975120, 51439104000] |