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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 4 |
| 3 | 28 |
| 4 | 96 |
| 5 | 244 |
| 6 | 516 |
| 7 | 968 |
| 8 | 1664 |
| 9 | 2680 |
| 10 | 4100 |
| 11 | 6020 |
| 12 | 8544 |
| 13 | 11788 |
| 14 | 15876 |
| 15 | 20944 |
| 16 | 27136 |
| 17 | 34608 |
| 18 | 43524 |
| 19 | 54060 |
| 20 | 66400 |
| 21 | 80740 |
| 22 | 97284 |
| 23 | 116248 |
| 24 | 137856 |
| 25 | 162344 |
| 26 | 189956 |
| 27 | 220948 |
| 28 | 255584 |
| 29 | 294140 |
| 30 | 336900 |
| 31 | 384160 |
| 32 | 436224 |
| 33 | 493408 |
| 34 | 556036 |
| 35 | 624444 |
| 36 | 698976 |
| 37 | 779988 |
| 38 | 867844 |
[0,4,28,96,244,516,968,1664,2680,4100,6020,8544, 11788,15876,20944,27136,34608,43524,54060,66400, 80740,97284,116248,137856,162344,189956,220948, 255584,294140,336900,384160,436224,493408,556036, 624444,698976,779988,867844] |