n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 21 |
3 | 83 |
4 | 319 |
5 | 1209 |
6 | 4551 |
7 | 17085 |
8 | 64125 |
9 | 240995 |
10 | 907741 |
11 | 3428655 |
12 | 12990121 |
13 | 49370963 |
14 | 188229489 |
15 | 719805987 |
16 | 2760498351 |
17 | 10615101273 |
18 | 40920439119 |
19 | 158106581157 |
20 | 612166272291 |
21 | 2374756691313 |
22 | 9228369037659 |
23 | 35918537840577 |
[1,5,21,83,319,1209,4551,17085,64125,240995, 907741,3428655,12990121,49370963,188229489, 719805987,2760498351,10615101273,40920439119, 158106581157,612166272291,2374756691313, 9228369037659,35918537840577] |