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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 0 |
| 12 | 1 |
| 13 | 2 |
| 14 | 3 |
| 15 | 4 |
| 16 | 5 |
| 17 | 4 |
| 18 | 4 |
| 19 | 5 |
| 20 | 7 |
| 21 | 10 |
| 22 | 15 |
| 23 | 18 |
| 24 | 20 |
| 25 | 22 |
| 26 | 25 |
| 27 | 30 |
| 28 | 41 |
| 29 | 55 |
| 30 | 70 |
| 31 | 85 |
| 32 | 100 |
| 33 | 115 |
| 34 | 138 |
| 35 | 173 |
| 36 | 221 |
| 37 | 281 |
| 38 | 351 |
| 39 | 425 |
| 40 | 508 |
| 41 | 611 |
| 42 | 747 |
| 43 | 928 |
| 44 | 1164 |
| 45 | 1451 |
| 46 | 1786 |
| 47 | 2176 |
| 48 | 2642 |
| 49 | 3219 |
| 50 | 3958 |
| 51 | 4901 |
| 52 | 6076 |
[1,0,0,0,0,0,1,1,1,1,1,0,1,2,3,4,5,4,4,5,7,10,15, 18,20,22,25,30,41,55,70,85,100,115,138,173,221, 281,351,425,508,611,747,928,1164,1451,1786,2176, 2642,3219,3958,4901,6076] |