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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 4 |
| 2 | 12 |
| 3 | 32 |
| 4 | 56 |
| 5 | 128 |
| 6 | 192 |
| 7 | 400 |
| 8 | 640 |
| 9 | 1232 |
| 10 | 2304 |
| 11 | 4496 |
| 12 | 8608 |
| 13 | 16960 |
| 14 | 33456 |
| 15 | 66304 |
| 16 | 132096 |
| 17 | 263168 |
| 18 | 526320 |
| 19 | 1049872 |
| 20 | 2100352 |
| 21 | 4196480 |
| 22 | 8393904 |
| 23 | 16779152 |
| 24 | 33565952 |
| 25 | 67111488 |
| 26 | 134235840 |
| 27 | 268441424 |
| 28 | 536906720 |
| 29 | 1073744960 |
| 30 | 2147560704 |
| 31 | 4294970896 |
| 32 | 8590069760 |
[0,4,12,32,56,128,192,400,640,1232,2304,4496,8608, 16960,33456,66304,132096,263168,526320,1049872, 2100352,4196480,8393904,16779152,33565952, 67111488,134235840,268441424,536906720,1073744960, 2147560704,4294970896,8590069760] |