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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 145 |
| 2 | 4339 |
| 3 | 55171 |
| 4 | 416773 |
| 5 | 2218645 |
| 6 | 9195511 |
| 7 | 31608967 |
| 8 | 94016137 |
| 9 | 249258777 |
| 10 | 601883259 |
| 11 | 1345167627 |
| 12 | 2817026445 |
| 13 | 5581287453 |
| 14 | 10542186111 |
| 15 | 19101404943 |
| 16 | 33368594193 |
| 17 | 56438048673 |
| 18 | 92746082819 |
| 19 | 148525641875 |
| 20 | 232376811797 |
| 21 | 355974143909 |
| 22 | 534934092551 |
| 23 | 789868374935 |
[1,145,4339,55171,416773,2218645,9195511,31608967, 94016137,249258777,601883259,1345167627, 2817026445,5581287453,10542186111,19101404943, 33368594193,56438048673,92746082819,148525641875, 232376811797,355974143909,534934092551, 789868374935] |