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| n | a(n) |
|---|---|
| 1 | 88 |
| 2 | 508 |
| 3 | 2960 |
| 4 | 17464 |
| 5 | 104112 |
| 6 | 626480 |
| 7 | 3800832 |
| 8 | 23225504 |
| 9 | 142804544 |
| 10 | 882709824 |
| 11 | 5480742912 |
| 12 | 34158067072 |
| 13 | 213553551104 |
| 14 | 1338584619776 |
| 15 | 8408369438720 |
| 16 | 52910011296256 |
| 17 | 333414947431424 |
| 18 | 2103480056239104 |
| 19 | 13283213826064384 |
[88,508,2960,17464,104112,626480,3800832,23225504, 142804544,882709824,5480742912,34158067072, 213553551104,1338584619776,8408369438720, 52910011296256,333414947431424,2103480056239104, 13283213826064384] |