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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 3 |
| 7 | 2 |
| 8 | 5 |
| 9 | 4 |
| 10 | 8 |
| 11 | 6 |
| 12 | 12 |
| 13 | 9 |
| 14 | 16 |
| 15 | 12 |
| 16 | 21 |
| 17 | 16 |
| 18 | 27 |
| 19 | 20 |
| 20 | 33 |
| 21 | 25 |
| 22 | 40 |
| 23 | 30 |
| 24 | 48 |
| 25 | 36 |
| 26 | 56 |
| 27 | 42 |
| 28 | 65 |
| 29 | 49 |
| 30 | 75 |
| 31 | 56 |
| 32 | 85 |
| 33 | 64 |
| 34 | 96 |
| 35 | 72 |
| 36 | 108 |
| 37 | 81 |
| 38 | 120 |
| 39 | 90 |
| 40 | 133 |
| 41 | 100 |
| 42 | 147 |
| 43 | 110 |
| 44 | 161 |
| 45 | 121 |
| 46 | 176 |
| 47 | 132 |
| 48 | 192 |
| 49 | 144 |
| 50 | 208 |
| 51 | 156 |
| 52 | 225 |
| 53 | 169 |
| 54 | 243 |
| 55 | 182 |
| 56 | 261 |
| 57 | 196 |
| 58 | 280 |
| 59 | 210 |
| 60 | 300 |
| 61 | 225 |
| 62 | 320 |
| 63 | 240 |
| 64 | 341 |
| 65 | 256 |
| 66 | 363 |
[0,0,0,1,1,3,2,5,4,8,6,12,9,16,12,21,16,27,20,33, 25,40,30,48,36,56,42,65,49,75,56,85,64,96,72,108, 81,120,90,133,100,147,110,161,121,176,132,192,144, 208,156,225,169,243,182,261,196,280,210,300,225, 320,240,341,256,363] |