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Search: id:A064841
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| A064841 |
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Working in base 2, replace n by the concatenation of its prime divisors in increasing order. |
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+0
4
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| 1, 10, 11, 1010, 101, 1011, 111, 101010, 1111, 10101, 1011, 101011, 1101, 10111, 11101, 10101010, 10001, 101111, 10011, 1010101, 11111, 101011, 10111, 10101011, 101101, 101101, 111111, 1010111, 11101, 1011101, 11111, 1010101010, 111011
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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P. De Geest, Home Primes
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EXAMPLE
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15 = 3*5 -> 11.101 -> 11101, so a(15) = 11101.
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CROSSREFS
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See A048985 for same terms written in base 10.
Adjacent sequences: A064838 A064839 A064840 this_sequence A064842 A064843 A064844
Sequence in context: A041218 A041917 A109280 this_sequence A064795 A078285 A103618
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KEYWORD
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nonn,easy,base
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Oct 31, 2001
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org) and Robert G. Wilson v (rgwv(AT)rgwv.com), Nov 01 2001
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