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| n | a(n) |
|---|---|
| 1 | 7580 |
| 2 | 16792 |
| 3 | 35690 |
| 4 | 71465 |
| 5 | 174154 |
| 6 | 412860 |
| 7 | 901622 |
| 8 | 2013562 |
| 9 | 4631014 |
| 10 | 10741246 |
| 11 | 24250558 |
| 12 | 54895662 |
| 13 | 124980670 |
| 14 | 286185464 |
| 15 | 650745046 |
| 16 | 1479976784 |
| 17 | 3367789342 |
| 18 | 7679928184 |
| 19 | 17482919110 |
| 20 | 39803180062 |
| 21 | 90607144520 |
| 22 | 206396554876 |
[7580,16792,35690,71465,174154,412860,901622, 2013562,4631014,10741246,24250558,54895662, 124980670,286185464,650745046,1479976784, 3367789342,7679928184,17482919110,39803180062, 90607144520,206396554876] |