A270479 - OEIS

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A270479 as a simple table

n	a(n)
1	1
2	2
3	4
4	10
5	83
6	24527
7	568662303
8	597257071145398433
9	701406190820966232276524545293793251
10	983324663657314079928895427833949144985650475980190987462191430555529010

[1,2,4,10,83,24527,568662303,597257071145398433, 701406190820966232276524545293793251, 98332466365731407992889542783394914498565047598019\ 0987462191430555529010]