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A207546 as a simple table

na(n)
175
25625
3327518
418584111
51033847229
657282563287
73168082336959
8175129179194410
99679245343889980
10534934649110777869
1129563222154411441671
121633804995808428069508
1390291695709459901168342

[75,5625,327518,18584111,1033847229,57282563287,
 3168082336959,175129179194410,9679245343889980,
 534934649110777869,29563222154411441671,
 1633804995808428069508,90291695709459901168342]