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A059900 Successively interleaved alternate bits in binary expansion of n gives vector of exponents in prime factorization of a(n). 4
1, 2, 3, 6, 4, 8, 12, 24, 5, 10, 15, 30, 20, 40, 60, 120, 16, 32, 48, 96, 64, 128, 192, 384, 80, 160, 240, 480, 320, 640, 960, 1920, 9, 18, 27, 54, 36, 72, 108, 216, 45, 90, 135, 270, 180, 360, 540, 1080, 144, 288, 432, 864, 576, 1152, 1728, 3456, 720, 1440, 2160 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Every value appears once. Inverse of A059884. Similar to A052330 (they diverge at n=16) but assigns bits via interleaving versus numerical order.

LINKS

Table of n, a(n) for n=0..58.

Index entries for sequences that are permutations of the natural numbers

EXAMPLE

To find a(7): 7 = ...000111; ... 0 0 1 1 = 3 -> 2^3 = 8; ... 0 1 = 1 -> 3^1 = 3; so a(7) = 3*8 = 24.

CROSSREFS

A059884, A052330.

Sequence in context: A121663 A096112 A052330 * A123664 A084980 A101369

Adjacent sequences:  A059897 A059898 A059899 * A059901 A059902 A059903

KEYWORD

base,easy,nonn

AUTHOR

Marc LeBrun, Feb 07 2001

STATUS

approved

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Last modified February 17 19:54 EST 2018. Contains 299296 sequences. (Running on oeis4.)