n | a(n) |
---|---|
1 | 20 |
2 | 831 |
3 | 12656 |
4 | 109075 |
5 | 648792 |
6 | 2978245 |
7 | 11293436 |
8 | 36973989 |
9 | 107727724 |
10 | 285451894 |
11 | 699013380 |
12 | 1601397330 |
13 | 3465135024 |
14 | 7135903782 |
15 | 14072047976 |
16 | 26707904230 |
17 | 48991682628 |
18 | 87164772761 |
19 | 150869282184 |
20 | 254695011933 |
21 | 420306632200 |
22 | 679327313795 |
23 | 1077197343300 |
24 | 1678276223715 |
[20,831,12656,109075,648792,2978245,11293436, 36973989,107727724,285451894,699013380,1601397330, 3465135024,7135903782,14072047976,26707904230, 48991682628,87164772761,150869282184,254695011933, 420306632200,679327313795,1077197343300, 1678276223715] |