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A207552 as a simple table

na(n)
175
25625
3327899
418584111
51058580304
660409681388
73444706587880
8196394845077515
911195823351575374
10638229931665914988
1136382525031488738507
122073995028464244989213
13118228412844652091729417

[75,5625,327899,18584111,1058580304,60409681388,
 3444706587880,196394845077515,11195823351575374,
 638229931665914988,36382525031488738507,
 2073995028464244989213,118228412844652091729417]