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| n | a(n) |
|---|---|
| 1 | 63 |
| 2 | 7623 |
| 3 | 776223 |
| 4 | 77762223 |
| 5 | 7777622223 |
| 6 | 777776222223 |
| 7 | 77777762222223 |
| 8 | 7777777622222223 |
| 9 | 777777776222222223 |
| 10 | 77777777762222222223 |
| 11 | 7777777777622222222223 |
| 12 | 777777777776222222222223 |
| 13 | 77777777777762222222222223 |
| 14 | 7777777777777622222222222223 |
| 15 | 777777777777776222222222222223 |
[63,7623,776223,77762223,7777622223,777776222223, 77777762222223,7777777622222223, 777777776222222223,77777777762222222223, 7777777777622222222223,777777777776222222222223, 77777777777762222222222223, 7777777777777622222222222223, 777777777777776222222222222223] |