A263430 - OEIS

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A263430 as a simple table

n	a(n)
0	1
1	1
2	5
3	225
4	131625
5	1309010625
6	273380323978125
7	1427352844030287890625
8	216119240915841469025244140625
9	1079864992142473709995957417730712890625
10	199639840782299404795675492100337942688751220703125

[1,1,5,225,131625,1309010625,273380323978125, 1427352844030287890625, 216119240915841469025244140625, 1079864992142473709995957417730712890625, 19963984078229940479567549210033794268875122070312\ 5]