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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 10 |
| 3 | 29 |
| 4 | 71 |
| 5 | 146 |
| 6 | 309 |
| 7 | 615 |
| 8 | 1119 |
| 9 | 2068 |
| 10 | 3709 |
| 11 | 6289 |
| 12 | 10793 |
| 13 | 18206 |
| 14 | 29513 |
| 15 | 48201 |
| 16 | 77757 |
| 17 | 121668 |
| 18 | 191257 |
| 19 | 297847 |
| 20 | 452761 |
| 21 | 690524 |
| 22 | 1045661 |
| 23 | 1552697 |
| 24 | 2310786 |
| 25 | 3419082 |
| 26 | 4976739 |
| 27 | 7254407 |
| 28 | 10522736 |
| 29 | 15052376 |
| 30 | 21552205 |
| 31 | 30731101 |
| 32 | 43297942 |
| 33 | 61039239 |
| 34 | 85741503 |
| 35 | 119191245 |
[1,4,10,29,71,146,309,615,1119,2068,3709,6289, 10793,18206,29513,48201,77757,121668,191257, 297847,452761,690524,1045661,1552697,2310786, 3419082,4976739,7254407,10522736,15052376, 21552205,30731101,43297942,61039239,85741503, 119191245] |