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A289223 as a simple table
| n | a(n) |
|---|---|
| 2 | 0 |
| 3 | 0 |
| 4 | 12 |
| 5 | 66 |
| 6 | 204 |
| 7 | 480 |
| 8 | 960 |
| 9 | 1722 |
| 10 | 2856 |
| 11 | 4464 |
| 12 | 6660 |
| 13 | 9570 |
| 14 | 13332 |
| 15 | 18096 |
| 16 | 24024 |
| 17 | 31290 |
| 18 | 40080 |
| 19 | 50592 |
| 20 | 63036 |
| 21 | 77634 |
| 22 | 94620 |
| 23 | 114240 |
| 24 | 136752 |
| 25 | 162426 |
| 26 | 191544 |
| 27 | 224400 |
| 28 | 261300 |
| 29 | 302562 |
| 30 | 348516 |
| 31 | 399504 |
| 32 | 455880 |
| 33 | 518010 |
| 34 | 586272 |
| 35 | 661056 |
| 36 | 742764 |
| 37 | 831810 |
| 38 | 928620 |
| 39 | 1033632 |
| 40 | 1147296 |
[0,0,12,66,204,480,960,1722,2856,4464,6660,9570, 13332,18096,24024,31290,40080,50592,63036,77634, 94620,114240,136752,162426,191544,224400,261300, 302562,348516,399504,455880,518010,586272,661056, 742764,831810,928620,1033632,1147296] |