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| n | a(n) |
|---|---|
| 0 | 64 |
| 1 | 557 |
| 2 | 6887 |
| 3 | 74148 |
| 4 | 864671 |
| 5 | 9764363 |
| 6 | 112439612 |
| 7 | 1284649009 |
| 8 | 14750484447 |
| 9 | 169027656900 |
| 10 | 1939448495087 |
| 11 | 22241611726431 |
| 12 | 255158474995768 |
| 13 | 2926771174469677 |
| 14 | 33574663298792895 |
| 15 | 385137356737681316 |
| 16 | 4418069204679674215 |
| 17 | 50680826003378390099 |
| 18 | 581378165089337632172 |
| 19 | 6669173056280115589625 |
[64,557,6887,74148,864671,9764363,112439612, 1284649009,14750484447,169027656900,1939448495087, 22241611726431,255158474995768,2926771174469677, 33574663298792895,385137356737681316, 4418069204679674215,50680826003378390099, 581378165089337632172,6669173056280115589625] |