73281

Appears in sequences

• Hidden fractal sequence: increasing sequence all of whose successive digits are the digits of the fractal sequence A025480 (which is built upon the natural counting numbers).at n=26A108685
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (1, -1, 0), (1, 0, 0), (1, 1, -1)}.at n=11A148202
• The number of ways that a straight line segment of length n, marked into n equal units, can be surrounded in a plane by one layer of regular polygons of unit edge that fit together without any gaps or overlaps, such that every polygon shares either a vertex or an exact unit edge with the segment. ("Line wreaths of length n.") Ways that differ by reflection or rotation are not counted as different.at n=9A158091
• Least number k > n such that n concatenated with k produces a cube.at n=40A243092
• Least number k such that n concatenated with k produces a cube.at n=40A245631
• Number of Dyck paths of semilength n such that each level has exactly six peaks or no peaks.at n=18A288113
• E.g.f. A(x) satisfies A(x) = exp( x * A(x*A(x)^2)^2 ).at n=5A384749
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of e.g.f. B(x)^k, where B(x) is the e.g.f. of A384749.at n=26A384751