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| n | a(n) |
|---|---|
| 1 | 26 |
| 2 | 92 |
| 3 | 330 |
| 4 | 1184 |
| 5 | 4250 |
| 6 | 15252 |
| 7 | 54738 |
| 8 | 196448 |
| 9 | 705026 |
| 10 | 2530252 |
| 11 | 9080754 |
| 12 | 32589688 |
| 13 | 116960298 |
| 14 | 419755820 |
| 15 | 1506450938 |
| 16 | 5406463248 |
| 17 | 19403117738 |
| 18 | 69635353188 |
| 19 | 249912538754 |
| 20 | 896904721104 |
| 21 | 3218878423314 |
| 22 | 11552150479772 |
| 23 | 41459217515106 |
[26,92,330,1184,4250,15252,54738,196448,705026, 2530252,9080754,32589688,116960298,419755820, 1506450938,5406463248,19403117738,69635353188, 249912538754,896904721104,3218878423314, 11552150479772,41459217515106] |