144816domain: NAppears in sequencesNumber of 3 X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 4 neighboring 1's.at n=10A297584E.g.f. A(x) satisfies: cosh(A(x) - A(-x)) - sinh(A(x) + A(-x)) = 1.at n=6A318001Number of catafusenes with 2n hexagons and C symmetry.at n=10A342554