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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 4 |
| 6 | 11 |
| 7 | 28 |
| 8 | 68 |
| 9 | 158 |
| 10 | 357 |
| 11 | 792 |
| 12 | 1731 |
| 13 | 3738 |
| 14 | 7996 |
| 15 | 16972 |
| 16 | 35789 |
| 17 | 75052 |
| 18 | 156647 |
| 19 | 325616 |
| 20 | 674436 |
| 21 | 1392570 |
| 22 | 2867433 |
| 23 | 5889840 |
| 24 | 12071527 |
| 25 | 24692662 |
| 26 | 50420348 |
| 27 | 102789856 |
| 28 | 209250377 |
| 29 | 425413364 |
| 30 | 863844579 |
| 31 | 1752204420 |
| 32 | 3550576068 |
| 33 | 7188094422 |
| 34 | 14539918861 |
| 35 | 29388174664 |
| 36 | 59357010539 |
[0,0,0,0,1,4,11,28,68,158,357,792,1731,3738,7996, 16972,35789,75052,156647,325616,674436,1392570, 2867433,5889840,12071527,24692662,50420348, 102789856,209250377,425413364,863844579, 1752204420,3550576068,7188094422,14539918861, 29388174664,59357010539] |