| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 17 |
| 3 | 39 |
| 4 | 81 |
| 5 | 151 |
| 6 | 257 |
| 7 | 407 |
| 8 | 609 |
| 9 | 871 |
| 10 | 1201 |
| 11 | 1607 |
| 12 | 2097 |
| 13 | 2679 |
| 14 | 3361 |
| 15 | 4151 |
| 16 | 5057 |
| 17 | 6087 |
| 18 | 7249 |
| 19 | 8551 |
| 20 | 10001 |
| 21 | 11607 |
| 22 | 13377 |
| 23 | 15319 |
| 24 | 17441 |
| 25 | 19751 |
| 26 | 22257 |
| 27 | 24967 |
| 28 | 27889 |
| 29 | 31031 |
| 30 | 34401 |
| 31 | 38007 |
| 32 | 41857 |
| 33 | 45959 |
| 34 | 50321 |
| 35 | 54951 |
| 36 | 59857 |
| 37 | 65047 |
| 38 | 70529 |
| 39 | 76311 |
| 40 | 82401 |
| 41 | 88807 |
[1,7,17,39,81,151,257,407,609,871,1201,1607,2097, 2679,3361,4151,5057,6087,7249,8551,10001,11607, 13377,15319,17441,19751,22257,24967,27889,31031, 34401,38007,41857,45959,50321,54951,59857,65047, 70529,76311,82401,88807] |