1073676287domain: NAppears in sequencesPrimes of the form 4^k - 2^(k+1) - 1.at n=7A091516a(n) = (2^n-1)^2 - 2.at n=14A093112Numbers of the form (2^k-1)^2 - 2 that are squarefree.at n=12A381698