| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 49 |
| 3 | 1057 |
| 4 | 28282 |
| 5 | 848101 |
| 6 | 27357493 |
| 7 | 928760053 |
| 8 | 32747441926 |
| 9 | 1188869998801 |
| 10 | 44174723634526 |
| 11 | 1672716549215326 |
| 12 | 64340599136306926 |
| 13 | 2507814491482180894 |
| 14 | 98859670298036582494 |
| 15 | 3935425516392739090270 |
| 16 | 158006444406545953115743 |
[1,4,49,1057,28282,848101,27357493,928760053, 32747441926,1188869998801,44174723634526, 1672716549215326,64340599136306926, 2507814491482180894,98859670298036582494, 3935425516392739090270,158006444406545953115743] |