46690

Appears in sequences

• Fibonacci sequence beginning 2, 28.at n=17A022376
• Partial sums of second pentagonal numbers with even index (A049453).at n=28A051895
• Number of square plane partitions of n.at n=37A089299
• Number of 2 X 2 matrices having all terms in {1,...,n} and determinant in [-n,n].at n=23A211069
• a(n) = Sum_{k=1..n} floor(n/k)^floor(n/k).at n=5A345098