| 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 | 3 |
| 27 | 7 |
| 28 | 15 |
| 29 | 31 |
| 30 | 61 |
| 31 | 115 |
| 32 | 214 |
| 33 | 384 |
| 34 | 683 |
| 35 | 1190 |
| 36 | 2055 |
| 37 | 3495 |
| 38 | 5919 |
| 39 | 9909 |
| 40 | 16531 |
| 41 | 27380 |
| 42 | 45257 |
| 43 | 74484 |
| 44 | 122607 |
| 45 | 201608 |
| 46 | 332510 |
| 47 | 550246 |
| 48 | 917414 |
| 49 | 1544048 |
| 50 | 2635887 |
| 51 | 4578224 |
| 52 | 8128645 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 1,3,7,15,31,61,115,214,384,683,1190,2055,3495, 5919,9909,16531,27380,45257,74484,122607,201608, 332510,550246,917414,1544048,2635887,4578224, 8128645] |