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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 3 |
| 7 | 4 |
| 8 | 5 |
| 9 | 6 |
| 10 | 7 |
| 11 | 9 |
| 12 | 12 |
| 13 | 15 |
| 14 | 19 |
| 15 | 25 |
| 16 | 31 |
| 17 | 40 |
| 18 | 51 |
| 19 | 65 |
| 20 | 82 |
| 21 | 105 |
| 22 | 133 |
| 23 | 169 |
| 24 | 215 |
| 25 | 274 |
| 26 | 348 |
| 27 | 443 |
| 28 | 564 |
| 29 | 717 |
| 30 | 912 |
| 31 | 1160 |
| 32 | 1476 |
| 33 | 1877 |
| 34 | 2388 |
| 35 | 3038 |
| 36 | 3864 |
| 37 | 4915 |
| 38 | 6252 |
| 39 | 7953 |
| 40 | 10116 |
| 41 | 12868 |
| 42 | 16368 |
| 43 | 20821 |
| 44 | 26484 |
| 45 | 33688 |
| 46 | 42852 |
| 47 | 54509 |
| 48 | 69336 |
| 49 | 88197 |
| 50 | 112189 |
| 51 | 142706 |
[0,1,1,1,2,2,3,4,5,6,7,9,12,15,19,25,31,40,51,65, 82,105,133,169,215,274,348,443,564,717,912,1160, 1476,1877,2388,3038,3864,4915,6252,7953,10116, 12868,16368,20821,26484,33688,42852,54509,69336, 88197,112189,142706] |