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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 12 |
| 4 | 32 |
| 5 | 74 |
| 6 | 156 |
| 7 | 310 |
| 8 | 580 |
| 9 | 1035 |
| 10 | 1780 |
| 11 | 2956 |
| 12 | 4764 |
| 13 | 7487 |
| 14 | 11492 |
| 15 | 17274 |
| 16 | 25492 |
| 17 | 36979 |
| 18 | 52812 |
| 19 | 74372 |
| 20 | 103364 |
| 21 | 141927 |
| 22 | 192724 |
| 23 | 258982 |
| 24 | 344652 |
| 25 | 454544 |
| 26 | 594392 |
| 27 | 771084 |
| 28 | 992852 |
| 29 | 1269377 |
| 30 | 1612104 |
| 31 | 2034508 |
| 32 | 2552248 |
| 33 | 3183594 |
| 34 | 3949784 |
| 35 | 4875248 |
| 36 | 5988168 |
[0,1,4,12,32,74,156,310,580,1035,1780,2956,4764, 7487,11492,17274,25492,36979,52812,74372,103364, 141927,192724,258982,344652,454544,594392,771084, 992852,1269377,1612104,2034508,2552248,3183594, 3949784,4875248,5988168] |