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| n | a(n) |
|---|---|
| 0 | 21 |
| 1 | 106 |
| 2 | 339 |
| 3 | 445 |
| 4 | 784 |
| 5 | 1229 |
| 6 | 9387 |
| 7 | 10616 |
| 8 | 62467 |
| 9 | 322951 |
| 10 | 385418 |
| 11 | 3020877 |
| 12 | 3406295 |
| 13 | 6427172 |
| 14 | 9833467 |
| 15 | 35927573 |
| 16 | 189471332 |
| 17 | 7993723517 |
| 18 | 40158088917 |
| 19 | 128467990268 |
| 20 | 168626079185 |
| 21 | 297094069453 |
| 22 | 465720148638 |
[21,106,339,445,784,1229,9387,10616,62467,322951, 385418,3020877,3406295,6427172,9833467,35927573, 189471332,7993723517,40158088917,128467990268, 168626079185,297094069453,465720148638] |