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| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | 2 |
| 2 | 3 |
| 3 | 16 |
| 4 | 318 |
| 5 | 667493 |
| 6 | 520599832812 |
| 7 | 1406502882894868771562029 |
| 8 | 5482100301108869539661068478608291549480253128390 |
| 9 | 195012261486920753888173091467257385308263858947121366558714224718185929485569758493733677353323155 |
[4,2,3,16,318,667493,520599832812, 1406502882894868771562029, 5482100301108869539661068478608291549480253128390, 19501226148692075388817309146725738530826385894712\ 1366558714224718185929485569758493733677353323155] |