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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 108 |
| 3 | 1407 |
| 4 | 1851 |
| 5 | 2407 |
| 6 | 9768 |
| 7 | 12340 |
| 8 | 15568 |
| 9 | 58435 |
| 10 | 73423 |
| 11 | 92235 |
| 12 | 342076 |
| 13 | 429432 |
| 14 | 539076 |
| 15 | 1995255 |
| 16 | 2504403 |
| 17 | 3143455 |
| 18 | 11630688 |
| 19 | 14598220 |
| 20 | 18322888 |
| 21 | 67790107 |
| 22 | 85086151 |
| 23 | 106795107 |
| 24 | 395111188 |
| 25 | 495919920 |
| 26 | 622448988 |
| 27 | 2302878255 |
| 28 | 2890434603 |
[0,108,1407,1851,2407,9768,12340,15568,58435, 73423,92235,342076,429432,539076,1995255,2504403, 3143455,11630688,14598220,18322888,67790107, 85086151,106795107,395111188,495919920,622448988, 2302878255,2890434603] |