Numbers k such that Sum_{j=1..k} j*floor(k/j) is divisible by k+1.

A332270

Numbers k such that Sum_{j=1..k} j*floor(k/j) is divisible by k+1.

Terms

    a(0) =3a(1) =4a(2) =14a(3) =29a(4) =82a(5) =67117a(6) =86249a(7) =140064a(8) =185699a(9) =392081a(10) =2915083a(11) =6315155a(12) =9723681a(13) =17754993a(14) =820165642a(15) =9388829301a(16) =143904506919a(17) =192738887697

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