n | a(n) |
---|---|
1 | 2 |
2 | 10 |
3 | 21 |
4 | 64 |
5 | 219 |
6 | 589 |
7 | 1782 |
8 | 5621 |
9 | 17333 |
10 | 54199 |
11 | 169770 |
12 | 532625 |
13 | 1674674 |
14 | 5267287 |
15 | 16571936 |
16 | 52167148 |
17 | 164217643 |
18 | 517100360 |
19 | 1628230629 |
20 | 5127481455 |
21 | 16147257228 |
22 | 50851033975 |
23 | 160145034188 |
24 | 504341598687 |
25 | 1588336701913 |
26 | 5002186675765 |
[2,10,21,64,219,589,1782,5621,17333,54199,169770, 532625,1674674,5267287,16571936,52167148, 164217643,517100360,1628230629,5127481455, 16147257228,50851033975,160145034188,504341598687, 1588336701913,5002186675765] |