137593

Properties

Appears in sequences

• a(n+1) = a(n) converted to base 7 from base 5 (written in base 10).at n=14A023380
• a(n) is the smallest natural number m such that 4^4^k + m is prime for k=0,1,...,n.at n=4A129615
• Primes whose base-7 representation also is the base-3 representation of a prime.at n=42A235470
• Primes p such that the polynomial k^4 + k^3 + k^2 + k + p yields only primes for k = 0...5.at n=33A247949
• Number of length n+3 0..4 arrays with every four consecutive terms having the maximum of some two terms equal to the minimum of the remaining two terms.at n=8A249703
• Expansion of e.g.f. exp(x + 2 * Sum_{k>=2} x^(2^k)/2^k).at n=9A308461
• Prime numbersat n=12809