105319domain: NPropertiesPrimalityPrimeyesAppears in sequencesIndices of primes in sequence defined by A(0) = 71, A(n) = 10*A(n-1) + 41 for n > 0.at n=22A101143a(0)=0, a(1)=1, a(2n)=18*a(n), a(2n+1)=a(2n)+1.at n=23A197352Primes p such that 2*p + 43 is a square.at n=25A269787Prime numbersat n=10046