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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 14 |
| 7 | 116 |
| 8 | 536 |
| 9 | 1824 |
| 10 | 5100 |
| 11 | 12432 |
| 12 | 27248 |
| 13 | 55148 |
| 14 | 104282 |
| 15 | 187120 |
| 16 | 320244 |
| 17 | 527976 |
| 18 | 840276 |
| 19 | 1300944 |
| 20 | 1959780 |
| 21 | 2888920 |
| 22 | 4168470 |
| 23 | 5910540 |
| 24 | 8233080 |
| 25 | 11310640 |
| 26 | 15309580 |
| 27 | 20477040 |
| 28 | 27057280 |
| 29 | 35393500 |
| 30 | 45803810 |
| 31 | 58784224 |
| 32 | 74742016 |
| 33 | 94324896 |
[0,0,0,0,0,14,116,536,1824,5100,12432,27248,55148, 104282,187120,320244,527976,840276,1300944, 1959780,2888920,4168470,5910540,8233080,11310640, 15309580,20477040,27057280,35393500,45803810, 58784224,74742016,94324896] |