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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 47 |
| 2 | 1127 |
| 3 | 18376 |
| 4 | 229124 |
| 5 | 2329461 |
| 6 | 20108668 |
| 7 | 151545297 |
| 8 | 1017527958 |
| 9 | 6181552566 |
| 10 | 34392103690 |
| 11 | 176956505740 |
| 12 | 848791468979 |
| 13 | 3820924588762 |
| 14 | 16234164641604 |
| 15 | 65417524981549 |
| 16 | 251064958817457 |
| 17 | 921084890049639 |
[1,47,1127,18376,229124,2329461,20108668, 151545297,1017527958,6181552566,34392103690, 176956505740,848791468979,3820924588762, 16234164641604,65417524981549,251064958817457, 921084890049639] |