81255

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 19.at n=14A031697
• Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and vertical height (i.e., number of rows) k (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=40A121692
• a(n) = 361*n^2 + 2*n.at n=14A158309
• Numbers which have only digits 0 and 1 in bases 3 and 5.at n=8A268337