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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 11 |
| 3 | 101 |
| 4 | 1481 |
| 5 | 22271 |
| 6 | 55331 |
| 7 | 536441 |
| 8 | 661091 |
| 9 | 1461401 |
| 10 | 1615841 |
| 11 | 5527001 |
| 12 | 11086841 |
| 13 | 35240321 |
| 14 | 53266391 |
| 15 | 72610121 |
| 16 | 92202821 |
| 17 | 117458981 |
| 18 | 196091171 |
| 19 | 636118781 |
| 20 | 975348161 |
| 21 | 1156096301 |
| 22 | 1277816921 |
| 23 | 1347962381 |
| 24 | 2195593481 |
| 25 | 3128295551 |
[5,11,101,1481,22271,55331,536441,661091,1461401, 1615841,5527001,11086841,35240321,53266391, 72610121,92202821,117458981,196091171,636118781, 975348161,1156096301,1277816921,1347962381, 2195593481,3128295551] |