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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 286 |
| 3 | 614 |
| 4 | 2153 |
| 5 | 8368 |
| 6 | 30089 |
| 7 | 105709 |
| 8 | 376826 |
| 9 | 1341575 |
| 10 | 4761555 |
| 11 | 16938266 |
| 12 | 60287898 |
| 13 | 214388007 |
| 14 | 762687683 |
| 15 | 2714155126 |
| 16 | 9656982501 |
| 17 | 34362409576 |
| 18 | 122287872312 |
| 19 | 435186845623 |
| 20 | 1548741989760 |
| 21 | 5511952960843 |
| 22 | 19617235873777 |
[16,286,614,2153,8368,30089,105709,376826,1341575, 4761555,16938266,60287898,214388007,762687683, 2714155126,9656982501,34362409576,122287872312, 435186845623,1548741989760,5511952960843, 19617235873777] |