n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 19 |
6 | 53 |
7 | 153 |
8 | 453 |
9 | 1367 |
10 | 4191 |
11 | 13015 |
12 | 40857 |
13 | 129441 |
14 | 413337 |
15 | 1328971 |
16 | 4298727 |
17 | 13978971 |
18 | 45673981 |
19 | 149867513 |
20 | 493638797 |
21 | 1631616239 |
22 | 5410015615 |
23 | 17990076527 |
24 | 59981630321 |
25 | 200476419713 |
26 | 671564145137 |
27 | 2254338511507 |
28 | 7582179238151 |
29 | 25547868961315 |
[0,1,1,3,7,19,53,153,453,1367,4191,13015,40857, 129441,413337,1328971,4298727,13978971,45673981, 149867513,493638797,1631616239,5410015615, 17990076527,59981630321,200476419713,671564145137, 2254338511507,7582179238151,25547868961315] |