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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 2785 |
| 3 | 6965 |
| 4 | 20188 |
| 5 | 148501 |
| 6 | 1803435 |
| 7 | 11901719 |
| 8 | 82524101 |
| 9 | 673749714 |
| 10 | 5256983507 |
| 11 | 39517545958 |
| 12 | 303611392523 |
| 13 | 2352342648937 |
| 14 | 18072797704132 |
| 15 | 138769608980368 |
| 16 | 1068447238205615 |
| 17 | 8223731664385640 |
| 18 | 63249240912562142 |
[64,2785,6965,20188,148501,1803435,11901719, 82524101,673749714,5256983507,39517545958, 303611392523,2352342648937,18072797704132, 138769608980368,1068447238205615,8223731664385640, 63249240912562142] |