a(n) = Sum_{k<=n} A007955(k) * A000027(k) = Sum_{k<=n} A007955(k) * k, where A007955(m) = product of divisors of m.

A174935

a(n) = Sum_{k<=n} A007955(k) * A000027(k) = Sum_{k<=n} A007955(k) * k, where A007955(m) = product of divisors of m.

Terms

    a(0) =1a(1) =5a(2) =14a(3) =46a(4) =71a(5) =287a(6) =336a(7) =848a(8) =1091a(9) =2091a(10) =2212a(11) =22948a(12) =23117a(13) =25861a(14) =29236a(15) =45620a(16) =45909a(17) =150885a(18) =151246a(19) =311246a(20) =320507a(21) =331155a(22) =331684a(23) =8294308a(24) =8297433a(25) =8315009a(26) =8334692a(27) =8949348a(28) =8950189a(29) =33250189

External references