597012

Appears in sequences

• Number x such that sigma(x) = usigma(x) + (-1)sigma(x), where sigma(x) is the sum of divisors of x (A000203), usigma(x) is the sum of unitary divisors of x (A034448) and (-1)sigma(x) is defined in A049060.at n=13A258106
• Number of nX2 arrays containing 2 copies of 0..n-1 with no element 1 greater than its north, west, northeast or southeast neighbor modulo n and the upper left element equal to 0.at n=6A266852
• T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no element 1 greater than its north, west, northeast or southeast neighbor modulo n and the upper left element equal to 0.at n=34A266854