524280

Appears in sequences

• Number of Barlow packings with group P63/mmc(S) that repeat after 4n layers.at n=19A011946
• a(n) = n*(n^4-1)/2.at n=14A027484
• Number of 2n-bead balanced binary necklaces of fundamental period 2n which are equivalent to their reverse, complement and reversed complement.at n=40A045683
• Largest solution of phi(x) = 2^n.at n=17A058215
• Number of ways of 4-coloring a map in which there is a central circle surrounded by an annulus divided into n-1 regions. There are n regions in all.at n=14A090860
• Numbers n such that sigma(uphi(n)) = n where uphi is the unitary totient (or unitary phi) function (see A047994).at n=29A120116
• a(n) = 8*(2^n - 1).at n=15A159741
• a(n) = sigma(n*2^n).at n=13A176311
• Duplicate of A011946.at n=19A195095
• Decimal representation of the n-th iteration of the "Rule 41" elementary cellular automaton starting with a single ON (black) cell.at n=9A266610
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 617", based on the 5-celled von Neumann neighborhood.at n=19A283350
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 633", based on the 5-celled von Neumann neighborhood.at n=19A283403
• (2,6)-imperfect numbers.at n=28A365470
• Records of A112591.at n=17A375235