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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 19 |
| 3 | 57 |
| 4 | 81 |
| 5 | 251 |
| 6 | 437 |
| 7 | 691 |
| 8 | 739 |
| 9 | 1743 |
| 10 | 3695 |
| 11 | 6619 |
| 12 | 8217 |
| 13 | 9771 |
| 14 | 14771 |
| 15 | 15155 |
| 16 | 16831 |
| 17 | 18805 |
| 18 | 26745 |
| 19 | 30551 |
| 20 | 41755 |
| 21 | 46297 |
| 22 | 54339 |
| 23 | 72359 |
| 24 | 86407 |
| 25 | 96969 |
| 26 | 131059 |
| 27 | 344859 |
| 28 | 395231 |
| 29 | 519963 |
| 30 | 607141 |
| 31 | 677397 |
| 32 | 741509 |
| 33 | 893019 |
| 34 | 917217 |
| 35 | 1288415 |
| 36 | 1406811 |
| 37 | 1789599 |
| 38 | 1827927 |
| 39 | 3085785 |
| 40 | 3216051 |
| 41 | 3444439 |
| 42 | 3524869 |
[1,7,19,57,81,251,437,691,739,1743,3695,6619,8217, 9771,14771,15155,16831,18805,26745,30551,41755, 46297,54339,72359,86407,96969,131059,344859, 395231,519963,607141,677397,741509,893019,917217, 1288415,1406811,1789599,1827927,3085785,3216051, 3444439,3524869] |