82617

Appears in sequences

• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 878", based on the 5-celled von Neumann neighborhood.at n=8A273740
• The smallest number such that n or more numbers k exist with k - a(n) = sopfr(k) + sopfr(a(n)), where sopfr(m) is the sum of the primes dividing m with repetition.at n=13A370352
• a(n) is the smallest number such that exactly n numbers k exist with k - a(n) = sopfr(k) + sopfr(a(n)), where sopfr(m) is the sum of the primes dividing m with repetition.at n=13A370356