A115496 - OEIS

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A115496 as a simple table

n	a(n)
1	903
2	345870
3	153220284
4	73291228920
5	36318779751408
6	18300305883656160
7	9295994779732000704
8	4740885425272708333440
9	2422583238091329542815488
10	1239150146273075822421081600
11	634134936276556976984160205824

[903,345870,153220284,73291228920,36318779751408, 18300305883656160,9295994779732000704, 4740885425272708333440,2422583238091329542815488, 1239150146273075822421081600, 634134936276556976984160205824]