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| n | a(n) |
|---|---|
| 1 | 14 |
| 2 | 46 |
| 3 | 174 |
| 4 | 723 |
| 5 | 3192 |
| 6 | 14648 |
| 7 | 68819 |
| 8 | 327821 |
| 9 | 1574161 |
| 10 | 7594177 |
| 11 | 36734890 |
| 12 | 177970751 |
| 13 | 862989003 |
| 14 | 4186822990 |
| 15 | 20318525824 |
| 16 | 98621961836 |
| 17 | 478737668736 |
| 18 | 2324053123861 |
| 19 | 11282584749066 |
| 20 | 54774608227458 |
| 21 | 265922223475021 |
[14,46,174,723,3192,14648,68819,327821,1574161, 7594177,36734890,177970751,862989003,4186822990, 20318525824,98621961836,478737668736, 2324053123861,11282584749066,54774608227458, 265922223475021] |