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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 6 |
| 3 | 31 |
| 4 | 101 |
| 5 | 288 |
| 6 | 652 |
| 7 | 1349 |
| 8 | 2451 |
| 9 | 4222 |
| 10 | 7122 |
| 11 | 11121 |
| 12 | 17041 |
| 13 | 25118 |
| 14 | 35352 |
| 15 | 48559 |
| 16 | 65943 |
| 17 | 88422 |
| 18 | 115262 |
| 19 | 148829 |
| 20 | 189157 |
| 21 | 235804 |
| 22 | 292052 |
| 23 | 357705 |
| 24 | 435491 |
| 25 | 528902 |
| 26 | 635962 |
| 27 | 755545 |
| 28 | 890793 |
| 29 | 1040232 |
| 30 | 1207472 |
| 31 | 1409783 |
| 32 | 1635103 |
| 33 | 1888690 |
| 34 | 2165022 |
| 35 | 2481945 |
[0,6,31,101,288,652,1349,2451,4222,7122,11121, 17041,25118,35352,48559,65943,88422,115262,148829, 189157,235804,292052,357705,435491,528902,635962, 755545,890793,1040232,1207472,1409783,1635103, 1888690,2165022,2481945] |