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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 3 |
| 4 | 3 |
| 5 | 3 |
| 6 | 77 |
| 7 | 121 |
| 8 | 353 |
| 9 | 1771 |
| 10 | 3333 |
| 11 | 3663 |
| 12 | 7337 |
| 13 | 9229 |
| 14 | 13431 |
| 15 | 18681 |
| 16 | 31913 |
| 17 | 73837 |
| 18 | 74547 |
| 19 | 74847 |
| 20 | 76467 |
| 21 | 142241 |
| 22 | 155551 |
| 23 | 186681 |
| 24 | 390093 |
| 25 | 903309 |
| 26 | 918819 |
| 27 | 973379 |
| 28 | 1056501 |
| 29 | 1225221 |
| 30 | 1266621 |
| 31 | 1290921 |
| 32 | 1310131 |
| 33 | 1374731 |
| 34 | 1403041 |
| 35 | 1622261 |
[2,3,3,3,3,77,121,353,1771,3333,3663,7337,9229, 13431,18681,31913,73837,74547,74847,76467,142241, 155551,186681,390093,903309,918819,973379,1056501, 1225221,1266621,1290921,1310131,1374731,1403041, 1622261] |