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| n | a(n) |
|---|---|
| 9 | 1 |
| 10 | 10 |
| 11 | 100 |
| 12 | 752 |
| 13 | 5541 |
| 14 | 36977 |
| 15 | 243498 |
| 16 | 1535725 |
| 17 | 9622087 |
| 18 | 59096165 |
| 19 | 362231798 |
| 20 | 2201156531 |
| 21 | 13388589925 |
| 22 | 81219563343 |
| 23 | 494086167465 |
| 24 | 3007727300865 |
| 25 | 18380979656356 |
| 26 | 112620528644918 |
| 27 | 693158020152524 |
| 28 | 4281848080792280 |
| 29 | 26578705462004141 |
| 30 | 165681105341062256 |
[1,10,100,752,5541,36977,243498,1535725,9622087, 59096165,362231798,2201156531,13388589925, 81219563343,494086167465,3007727300865, 18380979656356,112620528644918,693158020152524, 4281848080792280,26578705462004141, 165681105341062256] |