1882848

Appears in sequences

• a(n) = n*(n+1)*(7*n^2 - n - 4)/4.at n=32A172077
• a(n) = Sum_{k<=n} A007955(k) * A000027(n-k+1) = Sum_{k<=n} A007955(k) * (n-k+1), where A007955(m) = product of divisors of m.at n=27A174934