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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 4 |
| 7 | 7 |
| 8 | 11 |
| 9 | 16 |
| 10 | 22 |
| 11 | 30 |
| 12 | 39 |
| 13 | 50 |
| 14 | 63 |
| 15 | 78 |
| 16 | 95 |
| 17 | 114 |
| 18 | 135 |
| 19 | 159 |
| 20 | 185 |
| 21 | 214 |
| 22 | 246 |
| 23 | 281 |
| 24 | 319 |
| 25 | 360 |
| 26 | 405 |
| 27 | 453 |
| 28 | 505 |
| 29 | 561 |
| 30 | 621 |
| 31 | 685 |
| 32 | 753 |
| 33 | 825 |
| 34 | 902 |
| 35 | 983 |
| 36 | 1069 |
| 37 | 1160 |
| 38 | 1256 |
| 39 | 1357 |
| 40 | 1463 |
| 41 | 1575 |
| 42 | 1692 |
| 43 | 1815 |
| 44 | 1944 |
| 45 | 2079 |
| 46 | 2220 |
| 47 | 2367 |
| 48 | 2520 |
| 49 | 2680 |
| 50 | 2846 |
[0,0,0,0,1,2,4,7,11,16,22,30,39,50,63,78,95,114, 135,159,185,214,246,281,319,360,405,453,505,561, 621,685,753,825,902,983,1069,1160,1256,1357,1463, 1575,1692,1815,1944,2079,2220,2367,2520,2680,2846] |