A254456 - OEIS

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A254456 as a simple table

n	a(n)
1	6440848
2	289945200
3	14531913928
4	623402653056
5	25559706957728
6	1041397026476012
7	41728495959588032
8	1663022535691018136
9	66242299786253394624
10	2638365158866570322184
11	105052207003477821889696

[6440848,289945200,14531913928,623402653056, 25559706957728,1041397026476012,41728495959588032, 1663022535691018136,66242299786253394624, 2638365158866570322184,105052207003477821889696]