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A251387 as a simple table

na(n)
1295759
2128887759
356040713651
424381056748093
510607219852841053
64614802877342194801
72007727783867224687619
8873487174422941192592727
9380021561340335015020932351
10165333151346118950517287569313

[295759,128887759,56040713651,24381056748093,
 10607219852841053,4614802877342194801,
 2007727783867224687619,873487174422941192592727,
 380021561340335015020932351,
 165333151346118950517287569313]