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 A066672 Exponents of powers of 2 displayed in A066671: 2^a[n] is the largest even divisor of A066669(n). 4
 1, 1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 2, 2, 2, 3, 2, 3, 3, 2, 2, 3, 1, 1, 2, 3, 2, 3, 3, 2, 1, 4, 2, 2, 3, 3, 3, 3, 3, 1, 3, 3, 3, 3, 3, 2, 1, 5, 3, 4, 4, 2, 1, 3, 4, 4, 3, 3, 1, 5, 4, 4, 3, 3, 2, 4, 2, 4, 4, 2, 3, 5, 4, 3, 4, 4, 1, 1, 4, 2, 3, 4, 2, 3, 1, 4, 3, 5, 2, 6, 5, 5, 4, 5, 5, 4, 3, 1, 4, 6, 5, 4, 1, 3, 4, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS EXAMPLE 263rd term in A066669 is 769 and Phi[769] = 768 = 3.256, so a(263) = Log[2,256] = Log[2,Phi[769]/3] = Log[2,Phi[A066669(263)]/A066670(263)] = 8. CROSSREFS Cf. A000010, A066669-A066672. Sequence in context: A025849 A088782 A291984 * A134024 A161069 A161108 Adjacent sequences:  A066669 A066670 A066671 * A066673 A066674 A066675 KEYWORD nonn AUTHOR Labos Elemer, Dec 18 2001 STATUS approved

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Last modified March 31 19:16 EDT 2020. Contains 333151 sequences. (Running on oeis4.)