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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 11 |
| 3 | 6 |
| 4 | 18 |
| 5 | 32 |
| 6 | 60 |
| 7 | 124 |
| 8 | 288 |
| 9 | 598 |
| 10 | 1266 |
| 11 | 2910 |
| 12 | 6362 |
| 13 | 13924 |
| 14 | 31578 |
| 15 | 70292 |
| 16 | 156670 |
| 17 | 353098 |
| 18 | 791762 |
| 19 | 1776560 |
| 20 | 3999190 |
| 21 | 8991152 |
| 22 | 20221266 |
| 23 | 45520396 |
| 24 | 102442546 |
| 25 | 230580304 |
| 26 | 519141320 |
| 27 | 1168761696 |
| 28 | 2631446768 |
| 29 | 5925181452 |
| 30 | 13341570650 |
[1,11,6,18,32,60,124,288,598,1266,2910,6362,13924, 31578,70292,156670,353098,791762,1776560,3999190, 8991152,20221266,45520396,102442546,230580304, 519141320,1168761696,2631446768,5925181452, 13341570650] |