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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 19 |
| 3 | 37 |
| 4 | 163 |
| 5 | 487 |
| 6 | 1297 |
| 7 | 1459 |
| 8 | 2917 |
| 9 | 19441 |
| 10 | 19927 |
| 11 | 39367 |
| 12 | 59779 |
| 13 | 131221 |
| 14 | 208657 |
| 15 | 224209 |
| 16 | 572023 |
| 17 | 2051893 |
| 18 | 5062663 |
| 19 | 8503057 |
| 20 | 19131877 |
| 21 | 44457337 |
| 22 | 86093443 |
| 23 | 113863969 |
| 24 | 133923133 |
| 25 | 258280327 |
| 26 | 565571323 |
| 27 | 600830137 |
| 28 | 859270843 |
| 29 | 1319934691 |
| 30 | 4161183031 |
| 31 | 5366491219 |
[7,19,37,163,487,1297,1459,2917,19441,19927,39367, 59779,131221,208657,224209,572023,2051893,5062663, 8503057,19131877,44457337,86093443,113863969, 133923133,258280327,565571323,600830137,859270843, 1319934691,4161183031,5366491219] |