46708domain: NAppears in sequencesa(n) = 4*a(n-1)+3*a(n-2) for n>1, a(0)=2, a(1)=4.at n=7A080042a(n)=floor((2+sqrt(7))^n).at n=7A080043Sum of squares of four consecutive primes.at n=26A133524Number of primes < 10^n with exactly one odd decimal digit.at n=7A359813