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| n | a(n) |
|---|---|
| 1 | 224 |
| 2 | 1176 |
| 3 | 5984 |
| 4 | 34416 |
| 5 | 189632 |
| 6 | 1128928 |
| 7 | 6414208 |
| 8 | 38622656 |
| 9 | 222041856 |
| 10 | 1341849472 |
| 11 | 7749914112 |
| 12 | 46887986944 |
| 13 | 271306185728 |
| 14 | 1642034355712 |
| 15 | 9508544919552 |
| 16 | 57555613998080 |
| 17 | 333396836184064 |
| 18 | 2018143397804032 |
[224,1176,5984,34416,189632,1128928,6414208, 38622656,222041856,1341849472,7749914112, 46887986944,271306185728,1642034355712, 9508544919552,57555613998080,333396836184064, 2018143397804032] |