218715

Appears in sequences

• Powers of 2 written in base 9.at n=17A001357
• Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 16 (most significant digit on right).at n=14A061969
• a(n) is 2^n represented in bijective base-9 numeration.at n=17A309908
• The cell number where a knight is trapped when moving on a spirally numbered hexagonal board to the lowest available unvisited cell and starting at cell n.at n=26A333684