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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 3 |
| 5 | 0 |
| 6 | -2 |
| 7 | 0 |
| 8 | 9 |
| 9 | 0 |
| 10 | -6 |
| 11 | 0 |
| 12 | 4 |
| 13 | 0 |
| 14 | -18 |
| 15 | 0 |
| 16 | 93 |
| 17 | 0 |
| 18 | -54 |
| 19 | 0 |
| 20 | 72 |
| 21 | 0 |
| 22 | -186 |
| 23 | 0 |
| 24 | 232 |
| 25 | 0 |
| 26 | -630 |
| 27 | 0 |
| 28 | 1020 |
| 29 | 0 |
| 30 | -2106 |
| 31 | 0 |
| 32 | 10881 |
| 33 | 0 |
| 34 | -7710 |
| 35 | 0 |
| 36 | 13824 |
| 37 | 0 |
| 38 | -27594 |
| 39 | 0 |
| 40 | 49440 |
| 41 | 0 |
| 42 | -97902 |
| 43 | 0 |
| 44 | 191844 |
| 45 | 0 |
| 46 | -364722 |
| 47 | 0 |
| 48 | 590800 |
| 49 | 0 |
| 50 | -1340622 |
| 51 | 0 |
| 52 | 2656920 |
| 53 | 0 |
| 54 | -4918482 |
| 55 | 0 |
| 56 | 9791784 |
| 57 | 0 |
| 58 | -18512790 |
[1,2,1,3,0,-2,0,9,0,-6,0,4,0,-18,0,93,0,-54,0,72, 0,-186,0,232,0,-630,0,1020,0,-2106,0,10881,0, -7710,0,13824,0,-27594,0,49440,0,-97902,0,191844, 0,-364722,0,590800,0,-1340622,0,2656920,0, -4918482,0,9791784,0,-18512790] |