n | a(n) |
---|---|
1 | 40 |
2 | 2000 |
3 | 31280 |
4 | 204544 |
5 | 911144 |
6 | 3022220 |
7 | 8655424 |
8 | 21284040 |
9 | 47231344 |
10 | 96369040 |
11 | 187026380 |
12 | 335425808 |
13 | 582302520 |
14 | 973424372 |
15 | 1563214444 |
16 | 2426917164 |
17 | 3699260196 |
18 | 5472064152 |
19 | 7976593144 |
20 | 11351136420 |
21 | 15868645560 |
22 | 21892595476 |
[40,2000,31280,204544,911144,3022220,8655424, 21284040,47231344,96369040,187026380,335425808, 582302520,973424372,1563214444,2426917164, 3699260196,5472064152,7976593144,11351136420, 15868645560,21892595476] |