n | a(n) |
---|---|
1 | 7 |
2 | 49 |
3 | 230 |
4 | 1020 |
5 | 4120 |
6 | 16109 |
7 | 61003 |
8 | 227197 |
9 | 834806 |
10 | 3041436 |
11 | 11009856 |
12 | 39680145 |
13 | 142545383 |
14 | 510891025 |
15 | 1827957230 |
16 | 6532356532 |
17 | 23322885552 |
18 | 83216416445 |
19 | 296774223739 |
20 | 1058010185133 |
21 | 3770863749966 |
22 | 13437211488900 |
23 | 47875876583016 |
[7,49,230,1020,4120,16109,61003,227197,834806, 3041436,11009856,39680145,142545383,510891025, 1827957230,6532356532,23322885552,83216416445, 296774223739,1058010185133,3770863749966, 13437211488900,47875876583016] |