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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 12 |
| 2 | 167 |
| 3 | 1312 |
| 4 | 15243 |
| 5 | 218149 |
| 6 | 18053887 |
| 7 | 16744993 |
| 8 | 9564235169 |
| 9 | 60519568871 |
| 10 | 2162548405277 |
| 11 | 1042027382717 |
| 12 | 495498798823907 |
| 13 | 142936348776673 |
| 14 | 502871478378225709 |
| 15 | 2136147813028051787 |
| 16 | 201533194180774871969 |
[1,12,167,1312,15243,218149,18053887,16744993, 9564235169,60519568871,2162548405277, 1042027382717,495498798823907,142936348776673, 502871478378225709,2136147813028051787, 201533194180774871969] |