Number of two-dimensional burst patterns of size n, i.e., translation inequivalent subsets of the grid Z^2 which can be covered by a connected subset of n elements (in the sense of von Neumann neighborhoods).

A093424

Number of two-dimensional burst patterns of size n, i.e., translation inequivalent subsets of the grid Z^2 which can be covered by a connected subset of n elements (in the sense of von Neumann neighborhoods).