n | a(n) |
---|---|
0 | 0 |
1 | 2 |
2 | 5 |
3 | 12 |
4 | 35 |
5 | 122 |
6 | 465 |
7 | 1832 |
8 | 7295 |
9 | 29142 |
10 | 116525 |
11 | 466052 |
12 | 1864155 |
13 | 7456562 |
14 | 29826185 |
15 | 119304672 |
16 | 477218615 |
17 | 1908874382 |
18 | 7635497445 |
19 | 30541989692 |
20 | 122167958675 |
21 | 488671834602 |
22 | 1954687338305 |
23 | 7818749353112 |
24 | 31274997412335 |
25 | 125099989649222 |
26 | 500399958596765 |
[0,2,5,12,35,122,465,1832,7295,29142,116525, 466052,1864155,7456562,29826185,119304672, 477218615,1908874382,7635497445,30541989692, 122167958675,488671834602,1954687338305, 7818749353112,31274997412335,125099989649222, 500399958596765] |