n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 17 |
3 | 111 |
4 | 757 |
5 | 5321 |
6 | 38131 |
7 | 276913 |
8 | 2031075 |
9 | 15011373 |
10 | 111618559 |
11 | 834026649 |
12 | 6257264575 |
13 | 47105424671 |
14 | 355648865425 |
15 | 2691925368489 |
16 | 20420008516447 |
17 | 155197818599687 |
18 | 1181563534890855 |
19 | 9009291052956319 |
20 | 68788955737056469 |
21 | 525876413869285467 |
[1,3,17,111,757,5321,38131,276913,2031075, 15011373,111618559,834026649,6257264575, 47105424671,355648865425,2691925368489, 20420008516447,155197818599687,1181563534890855, 9009291052956319,68788955737056469, 525876413869285467] |