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A170788 as a simple table

na(n)
00
11
216640
37184295
4537001984
515259765625
6235097531136
72373800931775
817592253153280
9102945759757569
10500000500000000
112088625263681671
127703513367183360
1325592951809295065
1477784058109429504

[0,1,16640,7184295,537001984,15259765625,
 235097531136,2373800931775,17592253153280,
 102945759757569,500000500000000,2088625263681671,
 7703513367183360,25592951809295065,
 77784058109429504]