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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 1 |
| 25 | 3 |
| 26 | 8 |
| 27 | 17 |
| 28 | 38 |
| 29 | 72 |
| 30 | 141 |
| 31 | 259 |
| 32 | 473 |
| 33 | 832 |
| 34 | 1466 |
| 35 | 2507 |
| 36 | 4285 |
| 37 | 7199 |
| 38 | 12054 |
| 39 | 19952 |
| 40 | 32957 |
| 41 | 53990 |
| 42 | 88340 |
| 43 | 143861 |
| 44 | 234222 |
| 45 | 380675 |
| 46 | 619906 |
| 47 | 1011030 |
| 48 | 1657465 |
| 49 | 2734112 |
| 50 | 4555888 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1, 3,8,17,38,72,141,259,473,832,1466,2507,4285,7199, 12054,19952,32957,53990,88340,143861,234222, 380675,619906,1011030,1657465,2734112,4555888] |