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A087002 as a simple table

na(n)
1857
20
3230
441176470
5473684210
656521739130
765517241379310
878723404255319148936170
983050847457627118644067796610
10836065573770491803278688524590
118630
128876404494382022471910

[857,0,230,41176470,473684210,56521739130,
 65517241379310,78723404255319148936170,
 83050847457627118644067796610,
 836065573770491803278688524590,8630,
 8876404494382022471910]