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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 46 |
| 4 | 126 |
| 5 | 141 |
| 6 | 404 |
| 7 | 466 |
| 8 | 1541 |
| 9 | 4004 |
| 10 | 4195 |
| 11 | 4666 |
| 12 | 12658 |
| 13 | 13266 |
| 14 | 40004 |
| 15 | 41995 |
| 16 | 46666 |
| 17 | 147024 |
| 18 | 400004 |
| 19 | 402760 |
| 20 | 466666 |
| 21 | 1272798 |
| 22 | 1327266 |
| 23 | 1332666 |
| 24 | 4000004 |
| 25 | 4666666 |
| 26 | 40000004 |
| 27 | 46666666 |
| 28 | 133272666 |
| 29 | 133326666 |
| 30 | 148329375 |
| 31 | 400000004 |
[1,4,46,126,141,404,466,1541,4004,4195,4666,12658, 13266,40004,41995,46666,147024,400004,402760, 466666,1272798,1327266,1332666,4000004,4666666, 40000004,46666666,133272666,133326666,148329375, 400000004] |