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A115792 as a simple table
| n | a(n) |
|---|---|
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 6 |
| 9 | 11 |
| 10 | 20 |
| 11 | 37 |
| 12 | 69 |
| 13 | 126 |
| 14 | 232 |
| 15 | 426 |
| 16 | 784 |
| 17 | 1442 |
| 18 | 2652 |
| 19 | 4878 |
| 20 | 8973 |
| 21 | 16503 |
| 22 | 30354 |
| 23 | 55829 |
| 24 | 102686 |
| 25 | 188869 |
| 26 | 347384 |
| 27 | 638939 |
| 28 | 1175193 |
| 29 | 2161516 |
| 30 | 3975648 |
| 31 | 7312356 |
| 32 | 13449520 |
| 33 | 24737524 |
| 34 | 45499400 |
| 35 | 83686444 |
| 36 | 153923369 |
| 37 | 283109213 |
| 38 | 520719026 |
| 39 | 957751607 |
[0,0,1,1,2,3,6,11,20,37,69,126,232,426,784,1442, 2652,4878,8973,16503,30354,55829,102686,188869, 347384,638939,1175193,2161516,3975648,7312356, 13449520,24737524,45499400,83686444,153923369, 283109213,520719026,957751607] |