n | a(n) |
---|---|
1 | 121 |
2 | 427 |
3 | 1562 |
4 | 5761 |
5 | 21239 |
6 | 78245 |
7 | 287858 |
8 | 1059674 |
9 | 3901868 |
10 | 14366833 |
11 | 52894813 |
12 | 194725954 |
13 | 716822517 |
14 | 2638639647 |
15 | 9712504051 |
16 | 35749337667 |
17 | 131581046318 |
18 | 484294944395 |
19 | 1782459967105 |
20 | 6560310404375 |
21 | 24144873322163 |
22 | 88863279809958 |
[121,427,1562,5761,21239,78245,287858,1059674, 3901868,14366833,52894813,194725954,716822517, 2638639647,9712504051,35749337667,131581046318, 484294944395,1782459967105,6560310404375, 24144873322163,88863279809958] |