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A212528 as a simple table

na(n)
26
30
4714285
563
6846153
77647058823529411
8894736842105263157
98260869565217391304347
107931034482758620689655172413
11935483870967741
12837
1390243
14953488372093023255813
159148936170212765957446808510638297872340425531
168867924528301

[6,0,714285,63,846153,7647058823529411,
 894736842105263157,8260869565217391304347,
 7931034482758620689655172413,935483870967741,837,
 90243,953488372093023255813,
 9148936170212765957446808510638297872340425531,
 8867924528301]