14909339domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = T(2n-1,n-2), T given by A026670. Also T(2n-1,n-2) = T(2n,n+2), T given by A026725 and T(2n,n-2), T given by A026736.at n=11A026675Prime numbersat n=965244