34157

Properties

Appears in sequences

• Primes that are palindromic in base 11.at n=39A029978
• Numbers k such that 3*2^k + 7 is prime.at n=34A059746
• a(n) is the smallest lesser of twin prime p, such that prime(2 + p) - prime(p) = 2n (cf. A096474).at n=23A096475
• Indices k such that 6 plus the k-th triangular number is a perfect square.at n=11A154140
• Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=16A192976
• Number of nonnegative integer arrays of length n+4 with new values 0 upwards introduced in order, no three adjacent elements equal, and containing the value n+1.at n=19A211837
• a(n) = A216960(n)/2.at n=35A216961
• Primes (with d digits, say) that generate another prime when acted on by the "standard" superpermutation of length A007489(d) of d elements (cf. comment).at n=34A244311
• Primes p such that p^3 is the concatenation of two k-digit primes where k is half the number of decimal digits in p^3.at n=12A248208
• Initial members of prime quadruples (n, n+2, n+144, n+146).at n=21A248523
• Initial members of prime quadruples (n, n+2, n+54, n+56).at n=29A248661
• Number of compositions of n whose set of distinct parts is pairwise coprime, where a singleton is always considered coprime.at n=17A337664
• Primes p such that p^2 + 1 has more divisors than p^2 - 1.at n=22A358879
• Concatenate the terms of A027750 (omitting spaces and commas), chop into blocks of length 5, then omit any leading zeros.at n=32A362446
• Prime numbersat n=3650