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| n | a(n) |
|---|---|
| 1 | -1 |
| 2 | -1 |
| 3 | 4 |
| 4 | 1000000000000000000000000000000000000 |
| 5 | 100 |
| 6 | 400 |
| 7 | 300 |
| 8 | 44 |
| 9 | 24 |
| 10 | 74 |
| 11 | 15000 |
| 12 | 13000 |
| 13 | 104 |
| 14 | 404 |
| 15 | 304 |
| 16 | 4004 |
| 17 | 1100 |
| 18 | 144 |
| 19 | 124 |
| 20 | 174 |
| 21 | 324 |
| 22 | 374 |
| 23 | 3024 |
| 24 | 3074 |
| 25 | 1104 |
| 26 | 1404 |
| 27 | 3404 |
| 28 | 3304 |
| 29 | 1144 |
| 30 | 1124 |
| 31 | 1174 |
| 32 | 1324 |
| 33 | 1374 |
| 34 | 3324 |
| 35 | 3374 |
| 36 | 11374 |
| 37 | 13324 |
| 38 | 13374 |
| 39 | 17374 |
| 40 | 23324 |
| 41 | 23374 |
[-1,-1,4,1000000000000000000000000000000000000, 100,400,300,44,24,74,15000,13000,104,404,304,4004, 1100,144,124,174,324,374,3024,3074,1104,1404,3404, 3304,1144,1124,1174,1324,1374,3324,3374,11374, 13324,13374,17374,23324,23374] |