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 A059018 Write 10*n in base 4; a(n) = sum of digits mod 4. 0
 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; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS EXAMPLE 50_10 = 302_4, so a(5) = 3+0+2 (mod 4) = 1. CROSSREFS Sequence in context: A079531 A182882 A134178 * A249371 A122190 A237291 Adjacent sequences:  A059015 A059016 A059017 * A059019 A059020 A059021 KEYWORD base,easy,nonn AUTHOR Robert Lozyniak (11(AT)onna.com), Feb 12 2001 STATUS approved

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Last modified September 20 16:46 EDT 2019. Contains 327242 sequences. (Running on oeis4.)