424157domain: NPropertiesPrimalityPrimeyesAppears in sequencesGreatest integer k such that k/2^n < (1+sqrt(5))/2 (the golden ratio).at n=18A293313a(n) = k if k is odd otherwise a(n) = k+1 and k = floor( 2^n*(1+sqrt(5))/2 ).at n=18A376448Prime numbersat n=35714