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| n | a(n) |
|---|---|
| 1 | 17871 |
| 2 | 63611 |
| 3 | 232096 |
| 4 | 847708 |
| 5 | 3032302 |
| 6 | 10384566 |
| 7 | 33356124 |
| 8 | 114688781 |
| 9 | 402127048 |
| 10 | 1416804566 |
| 11 | 4981407724 |
| 12 | 17404723484 |
| 13 | 60262025716 |
| 14 | 210339274004 |
| 15 | 740035932458 |
| 16 | 2610521659874 |
| 17 | 9211902014023 |
| 18 | 32474223368568 |
| 19 | 114422415398325 |
[17871,63611,232096,847708,3032302,10384566, 33356124,114688781,402127048,1416804566, 4981407724,17404723484,60262025716,210339274004, 740035932458,2610521659874,9211902014023, 32474223368568,114422415398325] |