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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 15 |
| 3 | 35 |
| 4 | 72 |
| 5 | 128 |
| 6 | 205 |
| 7 | 311 |
| 8 | 448 |
| 9 | 618 |
| 10 | 829 |
| 11 | 1083 |
| 12 | 1382 |
| 13 | 1734 |
| 14 | 2141 |
| 15 | 2605 |
| 16 | 3134 |
| 17 | 3730 |
| 18 | 4395 |
| 19 | 5137 |
| 20 | 5958 |
| 21 | 6860 |
| 22 | 7851 |
| 23 | 8933 |
| 24 | 10108 |
| 25 | 11384 |
| 26 | 12763 |
| 27 | 14247 |
| 28 | 15844 |
| 29 | 17556 |
| 30 | 19385 |
| 31 | 21339 |
| 32 | 23420 |
| 33 | 25630 |
| 34 | 27977 |
| 35 | 30463 |
| 36 | 33090 |
| 37 | 35866 |
| 38 | 38793 |
| 39 | 41873 |
| 40 | 45114 |
| 41 | 48518 |
| 42 | 52087 |
[4,15,35,72,128,205,311,448,618,829,1083,1382, 1734,2141,2605,3134,3730,4395,5137,5958,6860,7851, 8933,10108,11384,12763,14247,15844,17556,19385, 21339,23420,25630,27977,30463,33090,35866,38793, 41873,45114,48518,52087] |