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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 11 |
| 3 | 35 |
| 4 | 84 |
| 5 | 423 |
| 6 | 1753 |
| 7 | 8489 |
| 8 | 39873 |
| 9 | 200999 |
| 10 | 988455 |
| 11 | 5011027 |
| 12 | 24887392 |
| 13 | 126164927 |
| 14 | 633230135 |
| 15 | 3213998827 |
| 16 | 16234077336 |
| 17 | 82517378821 |
| 18 | 418670560481 |
| 19 | 2132042077379 |
| 20 | 10852726670501 |
| 21 | 55367063804357 |
| 22 | 282538940546931 |
| 23 | 1443897042955709 |
[0,11,35,84,423,1753,8489,39873,200999,988455, 5011027,24887392,126164927,633230135,3213998827, 16234077336,82517378821,418670560481, 2132042077379,10852726670501,55367063804357, 282538940546931,1443897042955709] |