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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 9 |
| 4 | 64 |
| 5 | 625 |
| 6 | 7776 |
| 7 | 117649 |
| 8 | 2097152 |
| 9 | 43046721 |
| 10 | 999999990 |
| 11 | 25937423490 |
| 12 | 743008289364 |
| 13 | 23298080054964 |
| 14 | 793714478374818 |
| 15 | 29192909282466930 |
| 16 | 1152920554828545360 |
| 17 | 48661137306426044400 |
| 18 | 2185908358103092063584 |
| 19 | 104127157513055758393026 |
| 20 | 5242868049702388548952080 |
[0,1,2,9,64,625,7776,117649,2097152,43046721, 999999990,25937423490,743008289364,23298080054964, 793714478374818,29192909282466930, 1152920554828545360,48661137306426044400, 2185908358103092063584,104127157513055758393026, 5242868049702388548952080] |