67851

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 49 ones.at n=9A031817
• a(n) = a(n,m) = Sum_{k=0..n} binomial(m*k,k)*binomial(m*(n-k),n-k) for m=7.at n=4A079563
• E.g.f.: 1/(cos(x) - x*cosh(x)).at n=7A205576
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 619", based on the 5-celled von Neumann neighborhood.at n=38A273252
• Numbers that are the sum of four third powers in nine or more ways.at n=36A345146
• Numbers that are the sum of four third powers in ten or more ways.at n=16A345155
• Numbers that are the sum of four third powers in exactly ten ways.at n=10A345156