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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 3 |
| 4 | 0 |
| 5 | 0 |
| 6 | 3 |
| 7 | 7 |
| 8 | 0 |
| 9 | 1 |
| 10 | 21 |
| 11 | 11 |
| 12 | 0 |
| 13 | 21 |
| 14 | 54 |
| 15 | 15 |
| 16 | 7 |
| 17 | 96 |
| 18 | 122 |
| 19 | 19 |
| 20 | 74 |
| 21 | 311 |
| 22 | 217 |
| 23 | 44 |
| 24 | 351 |
| 25 | 768 |
| 26 | 367 |
| 27 | 209 |
| 28 | 1227 |
| 29 | 1663 |
| 30 | 591 |
| 31 | 989 |
| 32 | 3402 |
| 33 | 3225 |
| 34 | 1156 |
| 35 | 3609 |
| 36 | 8289 |
| 37 | 5815 |
| 38 | 3053 |
| 39 | 11096 |
| 40 | 18015 |
| 41 | 10176 |
| 42 | 9466 |
| 43 | 29593 |
| 44 | 36249 |
| 45 | 18454 |
| 46 | 28960 |
| 47 | 71093 |
| 48 | 68438 |
| 49 | 37297 |
| 50 | 81606 |
[1,0,0,3,0,0,3,7,0,1,21,11,0,21,54,15,7,96,122,19, 74,311,217,44,351,768,367,209,1227,1663,591,989, 3402,3225,1156,3609,8289,5815,3053,11096,18015, 10176,9466,29593,36249,18454,28960,71093,68438, 37297,81606] |