86831

Appears in sequences

• Number of sublattices of index n in generic 5-dimensional lattice.at n=13A038992
• Numerator of Sum_{k=0..n} 1/binomial(n,k)^3.at n=6A100518
• a(n) = Sum_{d|n} Möbius(n/d)*d^5/phi(n).at n=13A160893
• a(n) = sigma(n^4).at n=13A202994
• Number of (n+2) X (1+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00000001 00001001 or 00100101.at n=9A260973
• Odd numbers m such that sigma(x) = m has more than 1 solution.at n=28A300869