1046527

Properties

Appears in sequences

• Least k such that n! divides C(2k,k).at n=22A072120
• Primes of the form 4^k - 2^(k+1) - 1.at n=5A091516
• a(n) = (2^n-1)^2 - 2.at n=9A093112
• Primes p such that p+2 is the square of a product of 3 distinct primes.at n=16A164519
• 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 363", based on the 5-celled von Neumann neighborhood.at n=19A287851
• Array A(n, k) read by antidiagonals downwards: k-th base-n non-repunit prime p such that all numbers resulting from switching any two adjacent digits in the base-n representation of p are prime, where k runs over the positive integers, i.e., the offset of k is 1.at n=55A298643
• Numbers of the form (2^k-1)^2 - 2 that are squarefree.at n=7A381698
• Prime numbersat n=81880