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Search: id:A162720
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A162720 A014499 represented in binary +0
1
1, 10, 10, 11, 11, 11, 10, 11, 100, 100, 101, 11, 11, 100, 101, 100, 101, 101, 11, 100, 11, 101, 100, 100, 11, 100, 101, 101, 101, 100, 111 (list; graph; listen)
OFFSET

1,2

EXAMPLE

The 5th prime number is 11. The binary representation of 11 is 1011. There are 3 "1s" in 1011. 3 in binary is 11, so a(5)=3.

CROSSREFS

Sequence in context: A166710 A003855 A004209 this_sequence A112867 A063697 A111381

Adjacent sequences: A162717 A162718 A162719 this_sequence A162721 A162722 A162723

KEYWORD

base,nonn

AUTHOR

Ben Branman (137ben(AT)comcast.net), Jul 11 2009

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Last modified December 5 23:38 EST 2009. Contains 170428 sequences.


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