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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 26 |
| 3 | 83 |
| 4 | 173 |
| 5 | 1983 |
| 6 | 2953 |
| 7 | 19753 |
| 8 | 90643 |
| 9 | 258999 |
| 10 | 426859 |
| 11 | 4255753 |
| 12 | 13955253 |
| 13 | 42111153 |
| 14 | 92356426 |
| 15 | 425851173 |
| 16 | 878398753 |
| 17 | 9197190176 |
| 18 | 9196397753 |
| 19 | 89494606688 |
| 20 | 390974932563 |
| 21 | 918856391641 |
| 22 | 4250703842293 |
[3,26,83,173,1983,2953,19753,90643,258999,426859, 4255753,13955253,42111153,92356426,425851173, 878398753,9197190176,9196397753,89494606688, 390974932563,918856391641,4250703842293] |