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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 169 |
| 3 | 611 |
| 4 | 3835 |
| 5 | 18395 |
| 6 | 100113 |
| 7 | 512525 |
| 8 | 2702193 |
| 9 | 14044303 |
| 10 | 73505289 |
| 11 | 383392451 |
| 12 | 2003126697 |
| 13 | 10456915209 |
| 14 | 54611619153 |
| 15 | 285148941623 |
| 16 | 1489042615021 |
| 17 | 7775302008851 |
| 18 | 40601362677837 |
| 19 | 212010307642445 |
| 20 | 1107075047855985 |
[13,169,611,3835,18395,100113,512525,2702193, 14044303,73505289,383392451,2003126697, 10456915209,54611619153,285148941623, 1489042615021,7775302008851,40601362677837, 212010307642445,1107075047855985] |