150808

Appears in sequences

• Numbers k such that 129*2^k-1 is prime.at n=50A050590
• Integers n such that the century defined by the interval [100n+1, 100n+100] (i.e., the (n+1)-st century) contains exactly one Ormiston prime pair and no other primes.at n=26A162895
• Number of length n+3 0..2 arrays with no four consecutive terms having the maximum of any two terms equal to the minimum of the remaining two terms.at n=13A250381