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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | -1 |
| 4 | 3 |
| 5 | 15 |
| 6 | 9 |
| 7 | 16 |
| 8 | 128 |
| 9 | 119 |
| 10 | 129 |
| 11 | 1419 |
| 12 | 1407 |
| 13 | 1420 |
| 14 | 19880 |
| 15 | 19865 |
| 16 | 19881 |
| 17 | 337977 |
| 18 | 337959 |
| 19 | 337978 |
| 20 | 6759560 |
| 21 | 6759539 |
| 22 | 6759561 |
| 23 | 155469903 |
| 24 | 155469879 |
| 25 | 155469904 |
| 26 | 4042217504 |
| 27 | 4042217477 |
| 28 | 4042217505 |
| 29 | 117224307645 |
| 30 | 117224307615 |
| 31 | 117224307646 |
| 32 | 3751177844672 |
| 33 | 3751177844639 |
[1,2,-1,3,15,9,16,128,119,129,1419,1407,1420, 19880,19865,19881,337977,337959,337978,6759560, 6759539,6759561,155469903,155469879,155469904, 4042217504,4042217477,4042217505,117224307645, 117224307615,117224307646,3751177844672, 3751177844639] |