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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 159 |
| 3 | 81296 |
| 4 | 585396881 |
| 5 | 61994262028020 |
| 6 | 98925461617709743975 |
| 7 | 2414583243140269424293854400 |
| 8 | 910504281815476426073145299359052745 |
| 9 | 5341354769384557074743892800174971438265757284 |
| 10 | 489946515248844365403775650233194419858267427195735348151 |
| 11 | 705379807799940807283682167156246485805791300481296966713394135535056 |
[1,4,159,81296,585396881,61994262028020, 98925461617709743975,2414583243140269424293854400, 910504281815476426073145299359052745, 5341354769384557074743892800174971438265757284, 48994651524884436540377565023319441985826742719573\ 5348151, 70537980779994080728368216715624648580579130048129\ 6966713394135535056] |