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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 121 |
| 3 | 341 |
| 4 | 4141 |
| 5 | 32210 |
| 6 | 314717 |
| 7 | 2930164 |
| 8 | 28666025 |
| 9 | 281724928 |
| 10 | 2815289555 |
| 11 | 28370872818 |
| 12 | 288468152625 |
| 13 | 2952876368200 |
| 14 | 30409537607218 |
| 15 | 314760765272250 |
| 16 | 3272590619892675 |
| 17 | 34158620991538050 |
| 18 | 357779277130203136 |
| 19 | 3758998894159780092 |
| 20 | 39603542856374168550 |
[1,121,341,4141,32210,314717,2930164,28666025, 281724928,2815289555,28370872818,288468152625, 2952876368200,30409537607218,314760765272250, 3272590619892675,34158620991538050, 357779277130203136,3758998894159780092, 39603542856374168550] |