65248

Appears in sequences

• Numbers k such that sigma(k) = 2*phi(k+1).at n=26A068423
• a(n) = 2^n - n*(n+2).at n=16A176778
• The Wiener index of the straight pentachain of n pentagonal rings (see Fig. 2.1 in the A. A. Ali et al. reference).at n=31A224459
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 121", based on the 5-celled von Neumann neighborhood.at n=15A278957
• Number of solutions to 1 +- 8 +- 27 +- ... +- n^3 == 0 (mod n).at n=20A300269
• Numbers k whose binary expansion starts with the concatenation of the binary expansions of the run lengths in binary expansion of k.at n=38A348111