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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 5 |
| 3 | 4 |
| 4 | 18 |
| 5 | 17 |
| 6 | 10 |
| 7 | 50 |
| 8 | 48 |
| 9 | 37 |
| 10 | 20 |
| 11 | 115 |
| 12 | 110 |
| 13 | 93 |
| 14 | 67 |
| 15 | 35 |
| 16 | 231 |
| 17 | 220 |
| 18 | 194 |
| 19 | 156 |
| 20 | 109 |
| 21 | 56 |
| 22 | 420 |
| 23 | 399 |
| 24 | 360 |
| 25 | 306 |
| 26 | 240 |
| 27 | 165 |
| 28 | 84 |
| 29 | 708 |
| 30 | 672 |
| 31 | 615 |
| 32 | 540 |
| 33 | 450 |
| 34 | 348 |
| 35 | 237 |
| 36 | 120 |
| 37 | 1125 |
| 38 | 1068 |
| 39 | 987 |
| 40 | 885 |
| 41 | 765 |
| 42 | 630 |
| 43 | 483 |
| 44 | 327 |
| 45 | 165 |
| 46 | 1705 |
| 47 | 1620 |
| 48 | 1508 |
| 49 | 1372 |
| 50 | 1215 |
| 51 | 1040 |
| 52 | 850 |
| 53 | 648 |
| 54 | 437 |
| 55 | 220 |
[1,5,4,18,17,10,50,48,37,20,115,110,93,67,35,231, 220,194,156,109,56,420,399,360,306,240,165,84,708, 672,615,540,450,348,237,120,1125,1068,987,885,765, 630,483,327,165,1705,1620,1508,1372,1215,1040,850, 648,437,220] |