130817

Properties

Appears in sequences

• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={0,2}.at n=36A079966
• Sequence of primes 2*p(k) + 3 such that 2*p(k) + 3, 2*p(k+1) + 3, 2*p(k+2) + 3 are consecutive primes, where p(i) denotes the i-th prime. Sequence terms are 2*p(k) + 3.at n=6A089450
• a(n) = 2^(n-1)*(2^n - 1) + 1.at n=9A134169
• Primes of the form 2^j - 2^k + 1, where j > k >= 0.at n=36A152449
• Primes of the form 2^p-p*q where p is prime,q=15.at n=3A155849
• a(n) = 2^n - n*(n-2).at n=17A176776
• Primes p with A047967(p) also prime.at n=27A236418
• a(n) = prime(k) with k = n^2 + prime(n)^2.at n=27A243892
• Primes equal to a centered 9-gonal number plus 1.at n=36A285812
• 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 809", based on the 5-celled von Neumann neighborhood.at n=16A286857
• 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 553", based on the 5-celled von Neumann neighborhood.at n=16A289268
• Prime numbersat n=12233