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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 3 |
| 5 | 5 |
| 6 | 9 |
| 7 | 16 |
| 8 | 29 |
| 9 | 52 |
| 10 | 93 |
| 11 | 169 |
| 12 | 315 |
| 13 | 591 |
| 14 | 1119 |
| 15 | 2124 |
| 16 | 4052 |
| 17 | 7763 |
| 18 | 14922 |
| 19 | 28781 |
| 20 | 55629 |
| 21 | 107775 |
| 22 | 209241 |
| 23 | 406916 |
| 24 | 792579 |
| 25 | 1545812 |
| 26 | 3018687 |
| 27 | 5901609 |
| 28 | 11549484 |
| 29 | 22623452 |
| 30 | 44352970 |
| 31 | 87021370 |
| 32 | 170860941 |
| 33 | 335698520 |
| 34 | 659971004 |
| 35 | 1298228239 |
[0,0,0,1,3,5,9,16,29,52,93,169,315,591,1119,2124, 4052,7763,14922,28781,55629,107775,209241,406916, 792579,1545812,3018687,5901609,11549484,22623452, 44352970,87021370,170860941,335698520,659971004, 1298228239] |