26737

Properties

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 96 ones.at n=24A031864
• 30*a(n) is the gap between sexy prime triples in the n-th sexy prime triple triple whose initial term is 11.at n=15A090890
• Numbers k for which (9 + k!)/9 is prime.at n=12A137390
• a(n) = smallest prime p such that p!/n + 1 is prime, or 0 if no such prime exists.at n=8A139074
• Largest entry in a 2-composition of n, summed over all 2-compositions of n. A 2-composition of n is a nonnegative matrix with two rows, such that each column has at least one nonzero entry and whose entries sum up to n.at n=7A181339
• Primes p of the form p^2 + q + 1 where p < q are consecutive primes.at n=5A242230
• Primes of form n^2 + 2401.at n=18A256835
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 249", based on the 5-celled von Neumann neighborhood.at n=32A271014
• a(n) is the smallest prime p such that there is a multiplicative subgroup H of Z/pZ, of odd order and of index 2n, such that for any two cosets H1 and H2 of H, H1 + H2 contains all of (Z/pZ)\0, except that H+H contains all of (Z/pZ)\0 except -H. If no such prime exists, a(n) = 0.at n=23A294615
• Squares where knight moving to a lowest unvisited square on a spirally numbered board will have no available moves.at n=20A323714
• Position of first occurrence of n in A340300.at n=16A338459
• Primes p such that 2*p+q and 2*p+r are prime, where q and r are the next two primes after p.at n=43A340225
• Prime numbersat n=2936