n | a(n) |
---|---|
0 | 2 |
1 | 7 |
2 | 25 |
3 | 89 |
4 | 317 |
5 | 1129 |
6 | 4021 |
7 | 14321 |
8 | 51005 |
9 | 181657 |
10 | 646981 |
11 | 2304257 |
12 | 8206733 |
13 | 29228713 |
14 | 104099605 |
15 | 370756241 |
16 | 1320467933 |
17 | 4702916281 |
18 | 16749684709 |
19 | 59654886689 |
20 | 212464029485 |
21 | 756701861833 |
22 | 2695033644469 |
23 | 9598504657073 |
24 | 34185581260157 |
25 | 121753753094617 |
26 | 433632421804165 |
[2,7,25,89,317,1129,4021,14321,51005,181657, 646981,2304257,8206733,29228713,104099605, 370756241,1320467933,4702916281,16749684709, 59654886689,212464029485,756701861833, 2695033644469,9598504657073,34185581260157, 121753753094617,433632421804165] |