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A126319 as a simple table

na(n)
01
11
21
33
43
515
633
79061920
81252445414220
9126032376305404800
1050110448042127911907268800
1113399946812028296616282674883512406948355335893125182077721607466200299913000

[1,1,1,3,3,15,33,9061920,1252445414220,
 126032376305404800,50110448042127911907268800,
 13399946812028296616282674883512406948355335893125\
 182077721607466200299913000]