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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 13 |
| 3 | 19 |
| 4 | 36 |
| 5 | 63 |
| 6 | 143 |
| 7 | 299 |
| 8 | 719 |
| 9 | 1711 |
| 10 | 4249 |
| 11 | 10611 |
| 12 | 27144 |
| 13 | 69727 |
| 14 | 181467 |
| 15 | 475147 |
| 16 | 1253475 |
| 17 | 3324103 |
| 18 | 8862889 |
| 19 | 23729747 |
| 20 | 63791064 |
| 21 | 172066959 |
| 22 | 465577215 |
| 23 | 1263208683 |
| 24 | 3435919395 |
| 25 | 9366558151 |
| 26 | 25585896137 |
| 27 | 70019831931 |
| 28 | 191943278804 |
| 29 | 526978629663 |
| 30 | 1448862872667 |
| 31 | 3988658225035 |
| 32 | 10993823704779 |
| 33 | 30335737469495 |
| 34 | 83793424341677 |
[7,13,19,36,63,143,299,719,1711,4249,10611,27144, 69727,181467,475147,1253475,3324103,8862889, 23729747,63791064,172066959,465577215,1263208683, 3435919395,9366558151,25585896137,70019831931, 191943278804,526978629663,1448862872667, 3988658225035,10993823704779,30335737469495, 83793424341677] |