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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 48 |
| 3 | 512 |
| 4 | 3772 |
| 5 | 31744 |
| 6 | 262144 |
| 7 | 2097152 |
| 8 | 16728064 |
| 9 | 134140928 |
| 10 | 1073741824 |
| 11 | 8587837440 |
| 12 | 68719476736 |
| 13 | 549755813888 |
| 14 | 4397939335680 |
| 15 | 35184372088832 |
| 16 | 281474976710656 |
| 17 | 2251796592459776 |
| 18 | 18014398509481984 |
| 19 | 144115185909972992 |
[8,48,512,3772,31744,262144,2097152,16728064, 134140928,1073741824,8587837440,68719476736, 549755813888,4397939335680,35184372088832, 281474976710656,2251796592459776, 18014398509481984,144115185909972992] |