n | a(n) |
---|---|
1 | 720 |
2 | 13068 |
3 | 118124 |
4 | 723680 |
5 | 3416930 |
6 | 13339535 |
7 | 44990231 |
8 | 135036473 |
9 | 368411615 |
10 | 928095740 |
11 | 2185031420 |
12 | 4853222764 |
13 | 10246937272 |
14 | 20692933630 |
15 | 40171771630 |
16 | 75289668850 |
17 | 136717357942 |
18 | 241276443496 |
19 | 414908513800 |
20 | 696829576300 |
[720,13068,118124,723680,3416930,13339535, 44990231,135036473,368411615,928095740,2185031420, 4853222764,10246937272,20692933630,40171771630, 75289668850,136717357942,241276443496, 414908513800,696829576300] |