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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| 6 | 1 |
| 7 | 2 |
| 8 | 2 |
| 9 | 3 |
| 10 | 5 |
| 11 | 5 |
| 12 | 9 |
| 13 | 10 |
| 14 | 15 |
| 15 | 18 |
| 16 | 24 |
| 17 | 30 |
| 18 | 40 |
| 19 | 47 |
| 20 | 65 |
| 21 | 76 |
| 22 | 97 |
| 23 | 120 |
| 24 | 150 |
| 25 | 179 |
| 26 | 229 |
| 27 | 270 |
| 28 | 336 |
| 29 | 404 |
| 30 | 494 |
| 31 | 588 |
| 32 | 722 |
| 33 | 852 |
| 34 | 1035 |
| 35 | 1227 |
| 36 | 1476 |
| 37 | 1744 |
| 38 | 2090 |
| 39 | 2461 |
| 40 | 2935 |
| 41 | 3446 |
| 42 | 4092 |
| 43 | 4795 |
| 44 | 5665 |
| 45 | 6627 |
| 46 | 7801 |
| 47 | 9096 |
| 48 | 10680 |
| 49 | 12426 |
| 50 | 14528 |
| 51 | 16881 |
| 52 | 19680 |
| 53 | 22800 |
| 54 | 26525 |
[0,0,0,0,1,0,1,2,2,3,5,5,9,10,15,18,24,30,40,47, 65,76,97,120,150,179,229,270,336,404,494,588,722, 852,1035,1227,1476,1744,2090,2461,2935,3446,4092, 4795,5665,6627,7801,9096,10680,12426,14528,16881, 19680,22800,26525] |