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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 | 1 |
| 12 | 3 |
| 13 | 4 |
| 14 | 6 |
| 15 | 7 |
| 16 | 11 |
| 17 | 18 |
| 18 | 24 |
| 19 | 34 |
| 20 | 49 |
| 21 | 75 |
| 22 | 104 |
| 23 | 147 |
| 24 | 210 |
| 25 | 296 |
| 26 | 409 |
| 27 | 552 |
| 28 | 734 |
| 29 | 981 |
| 30 | 1311 |
| 31 | 1736 |
| 32 | 2314 |
| 33 | 3093 |
| 34 | 4139 |
| 35 | 5511 |
| 36 | 7396 |
| 37 | 9835 |
| 38 | 13106 |
| 39 | 17493 |
| 40 | 23270 |
| 41 | 31115 |
| 42 | 41664 |
| 43 | 55763 |
| 44 | 74739 |
| 45 | 100342 |
| 46 | 134559 |
| 47 | 180725 |
| 48 | 243566 |
| 49 | 327731 |
| 50 | 441270 |
| 51 | 594585 |
| 52 | 803252 |
| 53 | 1085426 |
| 54 | 1468777 |
| 55 | 1988905 |
| 56 | 2697846 |
| 57 | 3662239 |
| 58 | 4976375 |
| 59 | 6767707 |
| 60 | 9212942 |
| 61 | 12552513 |
| 62 | 17114780 |
| 63 | 23355139 |
| 64 | 31894014 |
[0,0,0,0,0,0,0,0,0,0,1,3,4,6,7,11,18,24,34,49,75, 104,147,210,296,409,552,734,981,1311,1736,2314, 3093,4139,5511,7396,9835,13106,17493,23270,31115, 41664,55763,74739,100342,134559,180725,243566, 327731,441270,594585,803252,1085426,1468777, 1988905,2697846,3662239,4976375,6767707,9212942, 12552513,17114780,23355139,31894014] |