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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 11 |
| 3 | 34 |
| 4 | 104 |
| 5 | 285 |
| 6 | 683 |
| 7 | 1469 |
| 8 | 2906 |
| 9 | 5383 |
| 10 | 9457 |
| 11 | 15904 |
| 12 | 25780 |
| 13 | 40493 |
| 14 | 61887 |
| 15 | 92339 |
| 16 | 134870 |
| 17 | 193271 |
| 18 | 272245 |
| 19 | 377566 |
| 20 | 516256 |
| 21 | 696781 |
| 22 | 929267 |
| 23 | 1225737 |
| 24 | 1600370 |
| 25 | 2069783 |
| 26 | 2653337 |
| 27 | 3373468 |
| 28 | 4256044 |
| 29 | 5330749 |
| 30 | 6631495 |
| 31 | 8196863 |
| 32 | 10070574 |
[4,11,34,104,285,683,1469,2906,5383,9457,15904, 25780,40493,61887,92339,134870,193271,272245, 377566,516256,696781,929267,1225737,1600370, 2069783,2653337,3373468,4256044,5330749,6631495, 8196863,10070574] |