53251

Appears in sequences

• Numbers k such that sopf(k) = sopf(k+2), where sopf(k) = A008472(k).at n=34A063968
• a(n) = numerator of Sum_{k=1..n} k^mu(n+1-k), where mu(m) = A008683(m).at n=13A130491
• Reverse (palindrome) of A164844.at n=40A168647
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 774", based on the 5-celled von Neumann neighborhood.at n=38A290238