n | a(n) |
---|---|
0 | 6 |
1 | 25 |
2 | 105 |
3 | 455 |
4 | 2045 |
5 | 9495 |
6 | 45205 |
7 | 219055 |
8 | 1074045 |
9 | 5305895 |
10 | 26335205 |
11 | 131090655 |
12 | 653692045 |
13 | 3263166295 |
14 | 16299929205 |
15 | 81451898255 |
16 | 407116166045 |
17 | 2035150690695 |
18 | 10174462707205 |
19 | 50868440641855 |
20 | 254330583216045 |
[6,25,105,455,2045,9495,45205,219055,1074045, 5305895,26335205,131090655,653692045,3263166295, 16299929205,81451898255,407116166045, 2035150690695,10174462707205,50868440641855, 254330583216045] |