8391679domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the smallest prime with both exactly an n number of 0's and exactly an n number of 1's in its binary representation. a(n) = 0 if no such prime exists.at n=11A145576Primes which are the concatenation of a prime p and 2p+1.at n=29A168166Prime numbersat n=564362