A231907 - OEIS

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A231907 as a simple table

n	a(n)
1	55
2	50323
3	11900005
4	3045772177
5	773715251151
6	196795864115357
7	50062652312668838
8	12735271817562619233
9	3239709683700969823885
10	824146184807033271848519
11	209653655768373672432814000

[55,50323,11900005,3045772177,773715251151, 196795864115357,50062652312668838, 12735271817562619233,3239709683700969823885, 824146184807033271848519, 209653655768373672432814000]