n | a(n) |
---|---|
1 | 6 |
2 | 15 |
3 | 30 |
4 | 105 |
5 | 210 |
6 | 705 |
7 | 1290 |
8 | 4410 |
9 | 7740 |
10 | 26985 |
11 | 46650 |
12 | 162435 |
13 | 279930 |
14 | 978465 |
15 | 1679370 |
16 | 5874120 |
17 | 10077690 |
18 | 35263440 |
19 | 60466170 |
20 | 211604295 |
21 | 362795730 |
22 | 1269743025 |
23 | 2176782330 |
24 | 7618570470 |
25 | 13060693800 |
[6,15,30,105,210,705,1290,4410,7740,26985,46650, 162435,279930,978465,1679370,5874120,10077690, 35263440,60466170,211604295,362795730,1269743025, 2176782330,7618570470,13060693800] |