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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 141 |
| 3 | 141 |
| 4 | 831 |
| 5 | 3783 |
| 6 | 831 |
| 7 | 19881 |
| 8 | 112707 |
| 9 | 112707 |
| 10 | 19881 |
| 11 | 201495 |
| 12 | 3277141 |
| 13 | 5903759 |
| 14 | 3277141 |
| 15 | 201495 |
| 16 | 3281361 |
| 17 | 97400287 |
| 18 | 373049827 |
| 19 | 373049827 |
| 20 | 97400287 |
| 21 | 3281361 |
| 22 | 40300479 |
| 23 | 2888274935 |
| 24 | 22237406277 |
| 25 | 47796308777 |
| 26 | 22237406277 |
| 27 | 2888274935 |
[0,141,141,831,3783,831,19881,112707,112707,19881, 201495,3277141,5903759,3277141,201495,3281361, 97400287,373049827,373049827,97400287,3281361, 40300479,2888274935,22237406277,47796308777, 22237406277,2888274935] |