a(n) is the smallest j such that 1/2 + 1/5 + 1/8 + ... + 1/j exceeds n.

A091464

a(n) is the smallest j such that 1/2 + 1/5 + 1/8 + ... + 1/j exceeds n.

Terms

    a(0) =17a(1) =323a(2) =6506a(3) =130664a(4) =2624438a(5) =52713275a(6) =1058774426a(7) =21266052797a(8) =427140088670

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