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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 0 |
| 2 | 3 |
| 3 | 0 |
| 4 | 10 |
| 5 | 0 |
| 6 | 57 |
| 7 | 0 |
| 8 | 122 |
| 9 | 351 |
| 10 | 197 |
| 11 | 0 |
| 12 | 5215 |
| 13 | 0 |
| 14 | 374 |
| 15 | 25300 |
| 16 | 42178 |
| 17 | 0 |
| 18 | 104718 |
| 19 | 0 |
| 20 | 954008 |
| 21 | 354663 |
| 22 | 1663 |
| 23 | 0 |
| 24 | 10300656 |
| 25 | 9691375 |
| 26 | 3915 |
| 27 | 2485431 |
| 28 | 81640573 |
| 29 | 0 |
| 30 | 327928582 |
| 31 | 0 |
| 32 | 643447570 |
| 33 | 9321400 |
| 34 | 24363 |
| 35 | 5257311235 |
| 36 | 8244703613 |
| 37 | 0 |
| 38 | 57249 |
| 39 | 19796166 |
| 40 | 110277192614 |
[2,0,3,0,10,0,57,0,122,351,197,0,5215,0,374,25300, 42178,0,104718,0,954008,354663,1663,0,10300656, 9691375,3915,2485431,81640573,0,327928582,0, 643447570,9321400,24363,5257311235,8244703613,0, 57249,19796166,110277192614] |