67227

Appears in sequences

• Numbers k such that k^6 == 1 (mod 7^5).at n=23A056103
• Number of perfect powers (A001597) not exceeding 2^n.at n=32A070228
• Numbers of the form i*7^j-1 (i=1..6, j >= 0).at n=33A181303
• a(n) = 4*7^n-1.at n=5A198686
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 705", based on the 5-celled von Neumann neighborhood.at n=36A273419