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A059018 Write 10*n in base 4; a(n) = sum of digits mod 4. +0
1
0, 0, 2, 2, 0, 1, 2, 0, 2, 2, 0, 0, 2, 0, 1, 2, 0, 0, 2, 2, 1, 2, 3, 0, 2, 2, 2, 2, 0, 1, 2, 3, 2, 2, 0, 0, 2, 3, 0, 2, 0, 0, 2, 2, 0, 2, 3, 0, 2, 2, 0, 0, 0, 1, 2, 3, 1, 1, 0, 0, 2, 3, 0, 1, 0, 0, 2, 2, 0, 1, 2, 0, 2, 2, 0, 0, 2, 1, 2, 3, 1, 1, 3, 3, 2, 3, 0, 1, 3, 3, 2, 2, 0, 1, 2, 3, 2, 2, 0, 0 (list; graph; listen)
OFFSET

0,3

EXAMPLE

50_10 = 302_4, so a(5) = 3+0+2 (mod 4) = 1.

CROSSREFS

Sequence in context: A104579 A079531 A134178 this_sequence A122190 A146093 A091269

Adjacent sequences: A059015 A059016 A059017 this_sequence A059019 A059020 A059021

KEYWORD

base,easy,nonn

AUTHOR

Robert Lozyniak (11(AT)onna.com), Feb 12 2001

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.


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