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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 1 |
| 10 | 2 |
| 11 | 1 |
| 12 | 2 |
| 13 | 2 |
| 14 | 3 |
| 15 | 5 |
| 16 | 4 |
| 17 | 5 |
| 18 | 7 |
| 19 | 8 |
| 20 | 10 |
| 21 | 11 |
| 22 | 13 |
| 23 | 16 |
| 24 | 19 |
| 25 | 23 |
| 26 | 26 |
| 27 | 31 |
| 28 | 36 |
| 29 | 42 |
| 30 | 49 |
| 31 | 56 |
| 32 | 65 |
| 33 | 75 |
| 34 | 86 |
| 35 | 100 |
| 36 | 114 |
| 37 | 130 |
| 38 | 149 |
| 39 | 170 |
| 40 | 193 |
| 41 | 220 |
| 42 | 250 |
| 43 | 283 |
| 44 | 321 |
| 45 | 363 |
| 46 | 410 |
| 47 | 463 |
| 48 | 522 |
| 49 | 587 |
| 50 | 660 |
| 51 | 742 |
| 52 | 832 |
| 53 | 933 |
| 54 | 1045 |
| 55 | 1168 |
| 56 | 1307 |
| 57 | 1459 |
| 58 | 1627 |
| 59 | 1814 |
| 60 | 2020 |
[0,0,0,0,0,1,0,0,1,1,2,1,2,2,3,5,4,5,7,8,10,11,13, 16,19,23,26,31,36,42,49,56,65,75,86,100,114,130, 149,170,193,220,250,283,321,363,410,463,522,587, 660,742,832,933,1045,1168,1307,1459,1627,1814, 2020] |