A017530 - OEIS

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A017530 as a simple table

n	a(n)
0	0
1	61917364224
2	63403380965376
3	3656158440062976
4	64925062108545024
5	604661760000000000
6	3743906242624487424
7	17490122876598091776
8	66483263599150104576
9	215892499727278669824
10	619173642240000000000

[0,61917364224,63403380965376,3656158440062976, 64925062108545024,604661760000000000, 3743906242624487424,17490122876598091776, 66483263599150104576,215892499727278669824, 619173642240000000000]