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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 37 |
| 4 | 28 |
| 5 | 1 |
| 6 | 1852 |
| 7 | 3016 |
| 8 | 138889 |
| 9 | 12345679 |
| 10 | 0 |
| 11 | 0 |
| 12 | 925925926 |
| 13 | 1624008547 |
| 14 | 8007936508 |
| 15 | 740740741 |
| 16 | 694444444507 |
| 17 | 12418300654183 |
| 18 | 617283950617284 |
| 19 | 1111111116374269 |
| 20 | 0 |
| 21 | 1005291005291005291 |
| 22 | 959595959595959596 |
[1,1,37,28,1,1852,3016,138889,12345679,0,0, 925925926,1624008547,8007936508,740740741, 694444444507,12418300654183,617283950617284, 1111111116374269,0,1005291005291005291, 959595959595959596] |