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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 | 0 |
| 25 | 1 |
| 26 | 1 |
| 27 | 6 |
| 28 | 11 |
| 29 | 29 |
| 30 | 51 |
| 31 | 110 |
| 32 | 196 |
| 33 | 382 |
| 34 | 667 |
| 35 | 1225 |
| 36 | 2111 |
| 37 | 3734 |
| 38 | 6348 |
| 39 | 10953 |
| 40 | 18446 |
| 41 | 31343 |
| 42 | 52484 |
| 43 | 88478 |
| 44 | 148095 |
| 45 | 249678 |
| 46 | 420811 |
| 47 | 716699 |
| 48 | 1229757 |
| 49 | 2144617 |
| 50 | 3801040 |
| 51 | 6893845 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 1,1,6,11,29,51,110,196,382,667,1225,2111,3734, 6348,10953,18446,31343,52484,88478,148095,249678, 420811,716699,1229757,2144617,3801040,6893845] |