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| n | a(n) |
|---|---|
| 1 | 26 |
| 2 | 444 |
| 3 | 3654 |
| 4 | 22888 |
| 5 | 124850 |
| 6 | 628860 |
| 7 | 3014438 |
| 8 | 13987152 |
| 9 | 63462906 |
| 10 | 283337380 |
| 11 | 1249770830 |
| 12 | 5460869112 |
| 13 | 23680912034 |
| 14 | 102049764684 |
| 15 | 437447065590 |
| 16 | 1866647382688 |
| 17 | 7933717075274 |
| 18 | 33602668068852 |
| 19 | 141880252869278 |
| 20 | 597395676419400 |
| 21 | 2509073159290866 |
| 22 | 10514236156062364 |
[26,444,3654,22888,124850,628860,3014438,13987152, 63462906,283337380,1249770830,5460869112, 23680912034,102049764684,437447065590, 1866647382688,7933717075274,33602668068852, 141880252869278,597395676419400,2509073159290866, 10514236156062364] |