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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 8 |
| 3 | 15 |
| 4 | 20 |
| 5 | 24 |
| 6 | 231 |
| 7 | 264 |
| 8 | 831 |
| 9 | 920 |
| 10 | 1364 |
| 11 | 1364 |
| 12 | 9044 |
| 13 | 67044 |
| 14 | 67044 |
| 15 | 67044 |
| 16 | 67044 |
| 17 | 268719 |
| 18 | 268719 |
| 19 | 3604695 |
| 20 | 4588724 |
| 21 | 5053620 |
| 22 | 5053620 |
| 23 | 5053620 |
| 24 | 5053620 |
| 25 | 60369855 |
| 26 | 364461096 |
| 27 | 532735220 |
| 28 | 715236599 |
| 29 | 1093026360 |
| 30 | 2710139064 |
| 31 | 2710139064 |
| 32 | 3356929784 |
| 33 | 3356929784 |
[4,8,15,20,24,231,264,831,920,1364,1364,9044, 67044,67044,67044,67044,268719,268719,3604695, 4588724,5053620,5053620,5053620,5053620,60369855, 364461096,532735220,715236599,1093026360, 2710139064,2710139064,3356929784,3356929784] |