130687

Properties

Appears in sequences

• Number of compositions minus number of partitions: A011782(n) - A000041(n).at n=18A056823
• Half the number of nX2 binary arrays with each element equal to at least one neighbor.at n=10A180762
• Primes p such that p-1 is squarefree and all prime divisors of p-1 other than 11 are also in the sequence.at n=47A267504
• 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 779", based on the 5-celled von Neumann neighborhood.at n=16A290296
• Quotients obtained when sigma(k) divides antisigma(k) with k = A076617(n), sigma (A000203) is the sum of divisors function and antisigma (A024816) is the sum of the non-divisors of n less than n function.at n=37A353000
• Prime numbersat n=12224