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A030401 Write 2n-1 in base 4 and juxtapose. 12
1, 3, 1, 1, 1, 3, 2, 1, 2, 3, 3, 1, 3, 3, 1, 0, 1, 1, 0, 3, 1, 1, 1, 1, 1, 3, 1, 2, 1, 1, 2, 3, 1, 3, 1, 1, 3, 3, 2, 0, 1, 2, 0, 3, 2, 1, 1, 2, 1, 3, 2, 2, 1, 2, 2, 3, 2, 3, 1, 2, 3, 3, 3, 0, 1, 3, 0, 3, 3, 1, 1, 3, 1, 3, 3, 2, 1, 3, 2, 3, 3, 3, 1, 3, 3, 3, 1, 0, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Robert Israel, Table of n, a(n) for n = 1..10000

MAPLE

map(op, [seq(ListTools[Reverse](convert(2*n-1, base, 4)), n=1..100)]); # Robert Israel, Jun 27 2018

MATHEMATICA

Array[IntegerDigits[2 # - 1, 4] &, 33] // Flatten (* Michael De Vlieger, Jun 27 2018 *)

CROSSREFS

Sequence in context: A114006 A050328 A191278 * A275888 A308166 A295931

Adjacent sequences:  A030398 A030399 A030400 * A030402 A030403 A030404

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 18 22:08 EDT 2022. Contains 353825 sequences. (Running on oeis4.)