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| n | a(n) |
|---|---|
| 1 | 31 |
| 2 | 37 |
| 3 | 1229 |
| 4 | 4931 |
| 5 | 12553 |
| 6 | 3259909 |
| 7 | 3324329 |
| 8 | 9291521 |
| 9 | 24066643 |
| 10 | 26025107 |
| 11 | 46330021 |
| 12 | 95979511 |
| 13 | 99268649 |
| 14 | 116923057 |
| 15 | 170995151 |
| 16 | 204041417 |
| 17 | 213084871 |
| 18 | 218568971 |
| 19 | 229981399 |
| 20 | 232850557 |
| 21 | 254042641 |
| 22 | 255432869 |
| 23 | 256714219 |
| 24 | 300222341 |
| 25 | 375303157 |
| 26 | 383432249 |
| 27 | 421514827 |
[31,37,1229,4931,12553,3259909,3324329,9291521, 24066643,26025107,46330021,95979511,99268649, 116923057,170995151,204041417,213084871,218568971, 229981399,232850557,254042641,255432869,256714219, 300222341,375303157,383432249,421514827] |