n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 6 |
3 | 19 |
4 | 46 |
5 | 124 |
6 | 321 |
7 | 844 |
8 | 2206 |
9 | 5779 |
10 | 15126 |
11 | 39604 |
12 | 103681 |
13 | 271444 |
14 | 710646 |
15 | 1860499 |
16 | 4870846 |
17 | 12752044 |
18 | 33385281 |
19 | 87403804 |
20 | 228826126 |
21 | 599074579 |
22 | 1568397606 |
23 | 4106118244 |
24 | 10749957121 |
25 | 28143753124 |
26 | 73681302246 |
27 | 192900153619 |
28 | 505019158606 |
29 | 1322157322204 |
[1,4,6,19,46,124,321,844,2206,5779,15126,39604, 103681,271444,710646,1860499,4870846,12752044, 33385281,87403804,228826126,599074579,1568397606, 4106118244,10749957121,28143753124,73681302246, 192900153619,505019158606,1322157322204] |