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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 16 |
| 3 | 90 |
| 4 | 320 |
| 5 | 875 |
| 6 | 2016 |
| 7 | 4116 |
| 8 | 7680 |
| 9 | 13365 |
| 10 | 22000 |
| 11 | 34606 |
| 12 | 52416 |
| 13 | 76895 |
| 14 | 109760 |
| 15 | 153000 |
| 16 | 208896 |
| 17 | 280041 |
| 18 | 369360 |
| 19 | 480130 |
| 20 | 616000 |
| 21 | 781011 |
| 22 | 979616 |
| 23 | 1216700 |
| 24 | 1497600 |
| 25 | 1828125 |
| 26 | 2214576 |
| 27 | 2663766 |
| 28 | 3183040 |
| 29 | 3780295 |
| 30 | 4464000 |
| 31 | 5243216 |
| 32 | 6127616 |
| 33 | 7127505 |
| 34 | 8253840 |
[0,1,16,90,320,875,2016,4116,7680,13365,22000, 34606,52416,76895,109760,153000,208896,280041, 369360,480130,616000,781011,979616,1216700, 1497600,1828125,2214576,2663766,3183040,3780295, 4464000,5243216,6127616,7127505,8253840] |