A234579 Let S_n = 0 followed by base-4 expansion of n, reversed; sequence is concatenation of S_0, S_1, S_2, ...

0, 0, 0, 1, 0, 2, 0, 3, 0, 0, 1, 0, 1, 1, 0, 2, 1, 0, 3, 1, 0, 0, 2, 0, 1, 2, 0, 2, 2, 0, 3, 2, 0, 0, 3, 0, 1, 3, 0, 2, 3, 0, 3, 3, 0, 0, 0, 1, 0, 1, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 2, 1, 1, 0, 3, 1, 1, 0, 0, 2, 1, 0, 1, 2, 1, 0, 2, 2, 1, 0, 3, 2, 1, 0, 0, 3, 1, 0, 1, 3, 1, 0, 2, 3, 1, 0

Offset

0,6

Comments

This is a version of the van der Corput sequence in base 4.

References

Crandall, Richard; Pomerance, Carl. Prime numbers. A computational perspective. Springer-Verlag, New York, 2001. xvi+545 pp. ISBN: 0-387-94777-9 MR1821158 (2002a:11007). See pp. 373-374.

Links

Paolo Xausa, Table of n, a(n) for n = 0..10003

Maple

See A234577.

Mathematica

Flatten[Array[{0, Reverse[IntegerDigits[#, 4]]} &, 50, 0]] (* Paolo Xausa, Mar 19 2024 *)

Crossrefs

Cf. A007090, A234577, A234578, A234580-A234585.

Sequence in context: A348019 A285982 A261727 * A309332 A109362 A085246

Adjacent sequences: A234576 A234577 A234578 * A234580 A234581 A234582

Keyword

nonn,base

Author

N. J. A. Sloane, Dec 29 2013

Status

approved