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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 14 |
| 4 | 46 |
| 5 | 127 |
| 6 | 383 |
| 7 | 1407 |
| 8 | 3594 |
| 9 | 11786 |
| 10 | 31469 |
| 11 | 97005 |
| 12 | 451299 |
| 13 | 982740 |
| 14 | 3079892 |
| 15 | 7862861 |
| 16 | 24640077 |
| 17 | 110733519 |
| 18 | 244951247 |
| 19 | 1019792225 |
| 20 | 3344315159 |
| 21 | 13804668362 |
| 22 | 48164406730 |
| 23 | 185603360202 |
| 24 | 468032896683 |
| 25 | 1567544524459 |
| 26 | 4109410352788 |
| 27 | 12905503374996 |
| 28 | 58659088284918 |
[1,5,14,46,127,383,1407,3594,11786,31469,97005, 451299,982740,3079892,7862861,24640077,110733519, 244951247,1019792225,3344315159,13804668362, 48164406730,185603360202,468032896683, 1567544524459,4109410352788,12905503374996, 58659088284918] |