57991

Properties

Appears in sequences

• First member of a prime quadruple in a 2p-1 progression.at n=25A057327
• First member of a prime 5-tuple in a 2p-1 progression.at n=6A057328
• Let p = n-th prime, then a(n) = smallest prime having p as its least prime primitive root.at n=18A084739
• Primes starting a Cunningham chain of the second kind of length 5.at n=4A110022
• Smallest primes starting a complete four iterations Cunningham chain of the first or second kind.at n=7A110027
• Records in A084739.at n=9A133434
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 1), (1, -1, 1), (1, 0, 0), (1, 1, -1)}.at n=11A148159
• A symmetrical triangle:q=2;c(n,q)=Product[1 - q^i, {i, 1, n}];t(n,m,q)=A060187(n,m)-c(n,q)/(c(m,q)*c(n-m,q))+1.at n=30A176467
• A symmetrical triangle:q=2;c(n,q)=Product[1 - q^i, {i, 1, n}];t(n,m,q)=A060187(n,m)-c(n,q)/(c(m,q)*c(n-m,q))+1.at n=33A176467
• Primes p with f(p), f(f(p)) and f(f(f(p))) all prime, where f(n) = prime(n) - n + 1.at n=27A235934
• 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 838", based on the 5-celled von Neumann neighborhood.at n=45A290546
• Number of n X 3 0..1 arrays with each 1 adjacent to 1 or 4 king-move neighboring 1s.at n=9A296014
• Prime numbersat n=5873