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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 8 |
| 3 | 24 |
| 4 | 44 |
| 5 | 88 |
| 6 | 176 |
| 7 | 312 |
| 8 | 544 |
| 9 | 924 |
| 10 | 1584 |
| 11 | 2552 |
| 12 | 4136 |
| 13 | 6488 |
| 14 | 10128 |
| 15 | 15632 |
| 16 | 23748 |
| 17 | 35640 |
| 18 | 53080 |
| 19 | 78136 |
| 20 | 114024 |
| 21 | 165552 |
| 22 | 237744 |
| 23 | 339544 |
| 24 | 481248 |
| 25 | 678236 |
| 26 | 949008 |
| 27 | 1321840 |
| 28 | 1830376 |
| 29 | 2521688 |
| 30 | 3456672 |
| 31 | 4717208 |
| 32 | 6406680 |
| 33 | 8666448 |
| 34 | 11672464 |
| 35 | 15660528 |
| 36 | 20934868 |
[1,4,8,24,44,88,176,312,544,924,1584,2552,4136, 6488,10128,15632,23748,35640,53080,78136,114024, 165552,237744,339544,481248,678236,949008,1321840, 1830376,2521688,3456672,4717208,6406680,8666448, 11672464,15660528,20934868] |