100710domain: NAppears in sequencesNumber of ways to place zero or more nonadjacent 0,0 1,0 1,1 2,1 3,1 4,1 4,2 5,2 polyhexes in any orientation on a planar nXnXn triangular grid.at n=8A155370Numbers k such that 369*2^k+1 is prime.at n=23A323009Second term of the n-th differences of the prime numbers.at n=18A379542