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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 3 |
| 3 | 30 |
| 4 | 159 |
| 5 | 885 |
| 6 | 4902 |
| 7 | 27165 |
| 8 | 150531 |
| 9 | 834150 |
| 10 | 4622343 |
| 11 | 25614165 |
| 12 | 141937854 |
| 13 | 786531765 |
| 14 | 4358472387 |
| 15 | 24151957230 |
| 16 | 133835203311 |
| 17 | 741631888245 |
| 18 | 4109665051158 |
| 19 | 22773220920525 |
| 20 | 126195099756099 |
| 21 | 699295161542070 |
| 22 | 3875061106978647 |
| 23 | 21473191019519445 |
[5,3,30,159,885,4902,27165,150531,834150,4622343, 25614165,141937854,786531765,4358472387, 24151957230,133835203311,741631888245, 4109665051158,22773220920525,126195099756099, 699295161542070,3875061106978647, 21473191019519445] |