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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 3281 |
| 3 | 5631 |
| 4 | 22768 |
| 5 | 104357 |
| 6 | 484412 |
| 7 | 2195114 |
| 8 | 10198130 |
| 9 | 48049615 |
| 10 | 223679467 |
| 11 | 1041721806 |
| 12 | 4887086809 |
| 13 | 22919253272 |
| 14 | 107350787328 |
| 15 | 503656777755 |
| 16 | 2365442130353 |
| 17 | 11109565255936 |
| 18 | 52202648890916 |
| 19 | 245464176631920 |
[64,3281,5631,22768,104357,484412,2195114, 10198130,48049615,223679467,1041721806,4887086809, 22919253272,107350787328,503656777755, 2365442130353,11109565255936,52202648890916, 245464176631920] |