4966055935domain: NAppears in sequencesa(n) = 37*2^(n-1)-1.at n=27A171390Number of length-n 0..2 arrays with no following elements greater than or equal to the first repeated value.at n=28A267226a(n) = 2*a(n-1) + 1 for a(n-1) not prime, otherwise a(n) = prime(n) - 1; with a(1) = 147.at n=25A375155