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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 1 |
| 7 | 1 |
| 8 | 2 |
| 9 | 2 |
| 10 | 4 |
| 11 | 4 |
| 12 | 7 |
| 13 | 8 |
| 14 | 13 |
| 15 | 14 |
| 16 | 20 |
| 17 | 22 |
| 18 | 30 |
| 19 | 33 |
| 20 | 44 |
| 21 | 48 |
| 22 | 62 |
| 23 | 68 |
| 24 | 85 |
| 25 | 93 |
| 26 | 114 |
| 27 | 124 |
| 28 | 149 |
| 29 | 162 |
| 30 | 193 |
| 31 | 209 |
| 32 | 245 |
| 33 | 265 |
| 34 | 307 |
| 35 | 331 |
| 36 | 380 |
| 37 | 409 |
| 38 | 466 |
| 39 | 500 |
| 40 | 565 |
| 41 | 605 |
| 42 | 679 |
| 43 | 726 |
| 44 | 810 |
| 45 | 864 |
| 46 | 959 |
| 47 | 1021 |
| 48 | 1127 |
| 49 | 1198 |
| 50 | 1317 |
| 51 | 1397 |
| 52 | 1529 |
| 53 | 1620 |
| 54 | 1767 |
[0,0,0,0,0,1,1,2,2,4,4,7,8,13,14,20,22,30,33,44, 48,62,68,85,93,114,124,149,162,193,209,245,265, 307,331,380,409,466,500,565,605,679,726,810,864, 959,1021,1127,1198,1317,1397,1529,1620,1767] |