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| n | a(n) |
|---|---|
| 2 | 0 |
| 3 | 4 |
| 4 | 14 |
| 5 | 48 |
| 6 | 99 |
| 7 | 224 |
| 8 | 399 |
| 9 | 714 |
| 10 | 1135 |
| 11 | 1849 |
| 12 | 2694 |
| 13 | 4058 |
| 14 | 5664 |
| 15 | 7960 |
| 16 | 10690 |
| 17 | 14565 |
| 18 | 18804 |
| 19 | 24788 |
| 20 | 31358 |
| 21 | 39989 |
| 22 | 49610 |
| 23 | 62259 |
| 24 | 75549 |
| 25 | 93029 |
| 26 | 111680 |
| 27 | 134936 |
| 28 | 159931 |
| 29 | 191395 |
| 30 | 223543 |
| 31 | 264462 |
| 32 | 306962 |
| 33 | 358307 |
| 34 | 412363 |
| 35 | 478129 |
| 36 | 544720 |
| 37 | 626970 |
[0,4,14,48,99,224,399,714,1135,1849,2694,4058, 5664,7960,10690,14565,18804,24788,31358,39989, 49610,62259,75549,93029,111680,134936,159931, 191395,223543,264462,306962,358307,412363,478129, 544720,626970] |