64612

Appears in sequences

• Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and having k columns ending at an even level (1<=k<=n). A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.at n=38A121698
• Numbers n = concat(s,t) such that n = prime(s) + prime(t).at n=4A251860
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 193", based on the 5-celled von Neumann neighborhood.at n=38A286640