

A132387


a(n) = n with each digit d of n replaced by d mod 4.


1



0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 10, 11, 12, 13, 10, 11, 12, 13, 10, 11, 20, 21, 22, 23, 20, 21, 22, 23, 20, 21, 30, 31, 32, 33, 30, 31, 32, 33, 30, 31, 0, 1, 2, 3, 0, 1, 2, 3, 0, 1, 10, 11, 12, 13, 10, 11, 12, 13, 10, 11, 20, 21, 22, 23, 20, 21, 22, 23, 20, 21, 30, 31, 32, 33, 30, 31, 32
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OFFSET

0,3


LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..5000


EXAMPLE

a(n) == n (mod 4) for n=0..9; a(n)=n for n=10..13; a(14)=10, a(15)=11,
a(41)=a(81)=1, etc.


MATHEMATICA

Table[FromDigits[Mod[IntegerDigits[n], 4]], {n, 0, 80}] (* Harvey P. Dale, Aug 25 2014 *)


CROSSREFS

Sequence in context: A010873 A049804 A277904 * A309954 A124757 A242305
Adjacent sequences: A132384 A132385 A132386 * A132388 A132389 A132390


KEYWORD

base,nonn


AUTHOR

Zak Seidov, Nov 20 2007


STATUS

approved



