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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 14 |
| 4 | 36 |
| 5 | 72 |
| 6 | 188 |
| 7 | 410 |
| 8 | 1021 |
| 9 | 2392 |
| 10 | 5818 |
| 11 | 13862 |
| 12 | 33678 |
| 13 | 80784 |
| 14 | 195440 |
| 15 | 470916 |
| 16 | 1137710 |
| 17 | 2744212 |
| 18 | 6627675 |
| 19 | 15994430 |
| 20 | 38619812 |
| 21 | 93222780 |
| 22 | 225072548 |
| 23 | 543339722 |
| 24 | 1311772784 |
| 25 | 3166816034 |
| 26 | 7645450834 |
| 27 | 18457558444 |
| 28 | 44560677618 |
| 29 | 107578520352 |
| 30 | 259717999680 |
| 31 | 627013566050 |
| 32 | 1513745792655 |
| 33 | 3654502889812 |
[2,7,14,36,72,188,410,1021,2392,5818,13862,33678, 80784,195440,470916,1137710,2744212,6627675, 15994430,38619812,93222780,225072548,543339722, 1311772784,3166816034,7645450834,18457558444, 44560677618,107578520352,259717999680, 627013566050,1513745792655,3654502889812] |