73673domain: NPropertiesPrimalityPrimeyesAppears in sequencesSmallest prime > 2n+1 beginning and ending with 2n+1, or 0 if no such prime exists.at n=36A070278Number of lattice paths from (0,0) to (n,n) which do not go above the diagonal x=y using steps (1,k), (k,1) with k>=2.at n=16A263316Prime numbersat n=7274