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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 7 |
| 2 | 29 |
| 3 | 103 |
| 4 | 373 |
| 5 | 1407 |
| 6 | 5277 |
| 7 | 19639 |
| 8 | 73157 |
| 9 | 272943 |
| 10 | 1018157 |
| 11 | 3796839 |
| 12 | 14159317 |
| 13 | 52806751 |
| 14 | 196940221 |
| 15 | 734469911 |
| 16 | 2739138277 |
| 17 | 10215390607 |
| 18 | 38097452877 |
| 19 | 142081224135 |
| 20 | 529879903477 |
| 21 | 1976142458303 |
| 22 | 7369856791005 |
| 23 | 27485259393911 |
| 24 | 102503957075973 |
| 25 | 382279865222383 |
| 26 | 1425680525146477 |
| 27 | 5316955307198503 |
[1,7,29,103,373,1407,5277,19639,73157,272943, 1018157,3796839,14159317,52806751,196940221, 734469911,2739138277,10215390607,38097452877, 142081224135,529879903477,1976142458303, 7369856791005,27485259393911,102503957075973, 382279865222383,1425680525146477,5316955307198503] |