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| n | a(n) |
|---|---|
| 1 | 704 |
| 2 | 1632 |
| 3 | 3928 |
| 4 | 10776 |
| 5 | 30248 |
| 6 | 92328 |
| 7 | 286168 |
| 8 | 938568 |
| 9 | 3112424 |
| 10 | 10749192 |
| 11 | 37426648 |
| 12 | 134315976 |
| 13 | 484881128 |
| 14 | 1790797128 |
| 15 | 6641272408 |
| 16 | 25056319368 |
| 17 | 94795789544 |
| 18 | 363296575752 |
| 19 | 1394805770968 |
| 20 | 5407003029576 |
| 21 | 20984006066408 |
| 22 | 82025728803528 |
[704,1632,3928,10776,30248,92328,286168,938568, 3112424,10749192,37426648,134315976,484881128, 1790797128,6641272408,25056319368,94795789544, 363296575752,1394805770968,5407003029576, 20984006066408,82025728803528] |