n | a(n) |
---|---|
0 | 3 |
1 | 14 |
2 | 57 |
3 | 235 |
4 | 969 |
5 | 4014 |
6 | 16695 |
7 | 69678 |
8 | 291609 |
9 | 1223060 |
10 | 5138488 |
11 | 21617717 |
12 | 91044538 |
13 | 383775880 |
14 | 1618868769 |
15 | 6832842691 |
16 | 28853864329 |
17 | 121894728098 |
18 | 515129513163 |
19 | 2177588642423 |
20 | 9207559005080 |
21 | 38940990014941 |
22 | 164721537694077 |
23 | 696889444599910 |
[3,14,57,235,969,4014,16695,69678,291609,1223060, 5138488,21617717,91044538,383775880,1618868769, 6832842691,28853864329,121894728098,515129513163, 2177588642423,9207559005080,38940990014941, 164721537694077,696889444599910] |