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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 12 |
| 3 | 32 |
| 4 | 72 |
| 5 | 144 |
| 6 | 288 |
| 7 | 576 |
| 8 | 1080 |
| 9 | 1920 |
| 10 | 3456 |
| 11 | 6283 |
| 12 | 10996 |
| 13 | 18609 |
| 14 | 31901 |
| 15 | 53169 |
| 16 | 86400 |
| 17 | 137223 |
| 18 | 213458 |
| 19 | 337040 |
| 20 | 539264 |
| 21 | 847415 |
| 22 | 1309642 |
| 23 | 1992933 |
| 24 | 2989400 |
| 25 | 4543888 |
| 26 | 6815833 |
| 27 | 10097530 |
| 28 | 15146295 |
| 29 | 22980586 |
| 30 | 34470879 |
| 31 | 51150337 |
| 32 | 76725506 |
| 33 | 113925752 |
| 34 | 167537870 |
| 35 | 244126611 |
[4,12,32,72,144,288,576,1080,1920,3456,6283,10996, 18609,31901,53169,86400,137223,213458,337040, 539264,847415,1309642,1992933,2989400,4543888, 6815833,10097530,15146295,22980586,34470879, 51150337,76725506,113925752,167537870,244126611] |