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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 54 |
| 3 | 711 |
| 4 | 4077 |
| 5 | 15606 |
| 6 | 46629 |
| 7 | 117621 |
| 8 | 262125 |
| 9 | 531423 |
| 10 | 0 |
| 11 | 36 |
| 12 | 684 |
| 13 | 4059 |
| 14 | 15588 |
| 15 | 46629 |
| 16 | 117612 |
| 17 | 262107 |
| 18 | 531423 |
| 19 | 999963 |
| 20 | 54 |
| 21 | 693 |
| 22 | 4059 |
| 23 | 15579 |
| 24 | 46620 |
| 25 | 117621 |
| 26 | 262098 |
| 27 | 531396 |
| 28 | 999963 |
| 29 | 1771524 |
| 30 | 711 |
| 31 | 4050 |
| 32 | 15588 |
| 33 | 46602 |
| 34 | 117612 |
| 35 | 262098 |
[0,0,54,711,4077,15606,46629,117621,262125,531423, 0,36,684,4059,15588,46629,117612,262107,531423, 999963,54,693,4059,15579,46620,117621,262098, 531396,999963,1771524,711,4050,15588,46602,117612, 262098] |