n | a(n) |
---|---|
0 | 2 |
1 | 6 |
2 | 17 |
3 | 48 |
4 | 135 |
5 | 379 |
6 | 1064 |
7 | 2987 |
8 | 8385 |
9 | 23538 |
10 | 66075 |
11 | 185483 |
12 | 520680 |
13 | 1461631 |
14 | 4103029 |
15 | 11517850 |
16 | 32332423 |
17 | 90762215 |
18 | 254783864 |
19 | 715218523 |
20 | 2007731289 |
21 | 5636018642 |
22 | 15821193955 |
23 | 44412588755 |
24 | 124673147016 |
25 | 349977202919 |
[2,6,17,48,135,379,1064,2987,8385,23538,66075, 185483,520680,1461631,4103029,11517850,32332423, 90762215,254783864,715218523,2007731289, 5636018642,15821193955,44412588755,124673147016, 349977202919] |