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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 1 |
| 3 | 18 |
| 4 | 21 |
| 5 | 200 |
| 6 | 14 |
| 7 | 3364 |
| 8 | 12 |
| 9 | 722 |
| 10 | 328 |
| 11 | 9801 |
| 12 | 42 |
| 13 | 25281 |
| 14 | 116 |
| 15 | 1800 |
| 16 | 15 |
| 17 | 36992 |
| 18 | 810 |
| 19 | 4414201 |
| 20 | 88 |
| 21 | 196 |
| 22 | 29161 |
| 23 | 541696 |
| 24 | 35 |
| 25 | 2928200 |
| 26 | 1413 |
| 27 | 103968 |
| 28 | 284 |
| 29 | 98942809 |
| 30 | 488 |
| 31 | 1547536 |
| 32 | 364 |
| 33 | 19602 |
| 34 | 17536 |
| 35 | 814088 |
| 36 | 370 |
| 37 | 49042009 |
| 38 | 55297 |
| 39 | 1521 |
| 40 | 440 |
| 41 | 3150464641 |
[4,1,18,21,200,14,3364,12,722,328,9801,42,25281, 116,1800,15,36992,810,4414201,88,196,29161,541696, 35,2928200,1413,103968,284,98942809,488,1547536, 364,19602,17536,814088,370,49042009,55297,1521, 440,3150464641] |