172031

Properties

Appears in sequences

• Sum of the lengths of the cycle types of the permutation created by duality and reversal on the partitions of n.at n=48A036050
• Primes of the form m*2^phi(m)-1 with phi(m) the Euler function, in order of increasing m.at n=11A046153
• Number of 2-input gates used to synthesize parity function in disjunctive normal form (DNF) with n inputs.at n=13A074494
• a(n) = 21*2^n - 1.at n=13A171389
• Decimal representation of the middle column of the "Rule 169" elementary cellular automaton starting with a single ON (black) cell.at n=17A267589
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 145", based on the 5-celled von Neumann neighborhood.at n=19A279150
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 481", based on the 5-celled von Neumann neighborhood.at n=19A288587
• Prime numbersat n=15670