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A203463 Where Golay-Rudin-Shapiro sequence A020985 is positive. 3
0, 1, 2, 4, 5, 7, 8, 9, 10, 14, 16, 17, 18, 20, 21, 23, 27, 28, 29, 31, 32, 33, 34, 36, 37, 39, 40, 41, 42, 46, 51, 54, 56, 57, 58, 62, 64, 65, 66, 68, 69, 71, 72, 73, 74, 78, 80, 81, 82, 84, 85, 87, 91, 92, 93, 95, 99, 102, 107, 108, 109, 111, 112, 113, 114 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

A020985(a(n)) = 1.

Or numbers n for which numbers of 1's and runs of 1's in binary representation have the same parity: A010060(n)=A268411(n). - Vladimir Shevelev, Feb 10 2016

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Vladimir Shevelev, Two analogs of Thue-Morse sequence, arXiv:1603.04434 [math.NT], 2016.

MATHEMATICA

GRS = Table[RudinShapiro[n], {n, 0, 200}];

Position[GRS, _?Positive] - 1 // Flatten (* Jean-Fran├žois Alcover, Dec 11 2018 *)

PROG

(Haskell)

import Data.List (elemIndices)

a203463 n = a203463_list !! (n-1)

a203463_list = elemIndices 1 a020985_list

CROSSREFS

Cf. A022155 (complement), A020985.

Sequence in context: A039069 A285423 A173025 * A223909 A010392 A095042

Adjacent sequences:  A203460 A203461 A203462 * A203464 A203465 A203466

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jan 02 2012

STATUS

approved

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Last modified July 19 08:23 EDT 2019. Contains 325155 sequences. (Running on oeis4.)