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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 3 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 423 |
| 17 | 0 |
| 18 | 2624 |
| 19 | 0 |
| 20 | 13474 |
| 21 | 0 |
| 22 | 0 |
| 23 | 0 |
| 24 | 611736 |
| 25 | 0 |
| 26 | 4169165 |
| 27 | 0 |
| 28 | 30926812 |
| 29 | 0 |
| 30 | 214975174 |
| 31 | 0 |
| 32 | 1590432628 |
| 33 | 0 |
| 34 | 11431365932 |
| 35 | 0 |
| 36 | 83946004461 |
| 37 | 0 |
| 38 | 0 |
| 39 | 0 |
| 40 | 4615654888831 |
| 41 | 0 |
| 42 | 35144700468737 |
| 43 | 0 |
| 44 | 271133285220726 |
| 45 | 0 |
| 46 | 2103716957561013 |
| 47 | 0 |
| 48 | 0 |
| 49 | 0 |
| 50 | 0 |
| 51 | 0 |
| 52 | 990170108748552983 |
| 53 | 0 |
| 54 | 7855344215856348141 |
[0,0,0,0,0,0,0,0,0,3,0,0,0,0,0,423,0,2624,0,13474, 0,0,0,611736,0,4169165,0,30926812,0,214975174,0, 1590432628,0,11431365932,0,83946004461,0,0,0, 4615654888831,0,35144700468737,0,271133285220726, 0,2103716957561013,0,0,0,0,0,990170108748552983,0, 7855344215856348141] |