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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 37 |
| 3 | 163 |
| 4 | 661 |
| 5 | 2643 |
| 6 | 10497 |
| 7 | 41511 |
| 8 | 164073 |
| 9 | 648495 |
| 10 | 2562749 |
| 11 | 10127291 |
| 12 | 40020845 |
| 13 | 158152811 |
| 14 | 624980489 |
| 15 | 2469769903 |
| 16 | 9759926065 |
| 17 | 38568829879 |
| 18 | 152414547541 |
| 19 | 602304889075 |
| 20 | 2380161078405 |
| 21 | 9405812345187 |
| 22 | 37169461719153 |
| 23 | 146884589311479 |
| 24 | 580451843386809 |
| 25 | 2293803210617951 |
| 26 | 9064547264192237 |
| 27 | 35820865853787467 |
[1,7,37,163,661,2643,10497,41511,164073,648495, 2562749,10127291,40020845,158152811,624980489, 2469769903,9759926065,38568829879,152414547541, 602304889075,2380161078405,9405812345187, 37169461719153,146884589311479,580451843386809, 2293803210617951,9064547264192237, 35820865853787467] |