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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 1 |
| 6 | 2 |
| 7 | 3 |
| 8 | 4 |
| 9 | 4 |
| 10 | 8 |
| 11 | 7 |
| 12 | 12 |
| 13 | 13 |
| 14 | 19 |
| 15 | 22 |
| 16 | 30 |
| 17 | 35 |
| 18 | 47 |
| 19 | 54 |
| 20 | 74 |
| 21 | 85 |
| 22 | 109 |
| 23 | 131 |
| 24 | 165 |
| 25 | 194 |
| 26 | 247 |
| 27 | 289 |
| 28 | 359 |
| 29 | 427 |
| 30 | 523 |
| 31 | 617 |
| 32 | 757 |
| 33 | 889 |
| 34 | 1078 |
| 35 | 1272 |
| 36 | 1529 |
| 37 | 1799 |
| 38 | 2154 |
| 39 | 2529 |
| 40 | 3013 |
| 41 | 3528 |
| 42 | 4187 |
| 43 | 4894 |
| 44 | 5779 |
| 45 | 6748 |
| 46 | 7937 |
| 47 | 9241 |
| 48 | 10844 |
| 49 | 12599 |
| 50 | 14724 |
| 51 | 17089 |
| 52 | 19912 |
| 53 | 23048 |
| 54 | 26801 |
[1,0,1,0,2,1,2,3,4,4,8,7,12,13,19,22,30,35,47,54, 74,85,109,131,165,194,247,289,359,427,523,617,757, 889,1078,1272,1529,1799,2154,2529,3013,3528,4187, 4894,5779,6748,7937,9241,10844,12599,14724,17089, 19912,23048,26801] |