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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 19 |
| 3 | 256 |
| 4 | 3435 |
| 5 | 9044 |
| 6 | 45735 |
| 7 | 127375 |
| 8 | 346499 |
| 9 | 667623 |
| 10 | 1659159 |
| 11 | 2752326 |
| 12 | 5689368 |
| 13 | 9976897 |
| 14 | 17538154 |
| 15 | 25598415 |
| 16 | 44565127 |
| 17 | 61843772 |
| 18 | 99471988 |
| 19 | 145959173 |
| 20 | 215170467 |
| 21 | 281539258 |
| 22 | 421251283 |
| 23 | 576147610 |
| 24 | 807868670 |
| 25 | 1076649303 |
| 26 | 1462427055 |
[1,19,256,3435,9044,45735,127375,346499,667623, 1659159,2752326,5689368,9976897,17538154,25598415, 44565127,61843772,99471988,145959173,215170467, 281539258,421251283,576147610,807868670, 1076649303,1462427055] |