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| n | a(n) |
|---|---|
| 0 | 6728 |
| 1 | 75272 |
| 2 | 1113032 |
| 3 | 14601608 |
| 4 | 206700000 |
| 5 | 2832600000 |
| 6 | 39626000000 |
| 7 | 549520000000 |
| 8 | 7662700000000 |
| 9 | 106600000000000 |
| 10 | 1485300000000000 |
| 11 | 20681000000000000 |
| 12 | 288070000000000000 |
| 13 | 4011900000000000000 |
[6728,75272,1113032,14601608,206700000,2832600000, 39626000000,549520000000,7662700000000, 106600000000000,1485300000000000, 20681000000000000,288070000000000000, 4011900000000000000] |