A026513 -id:A026513 - cp's OEIS frontend

A026515 a(n) = length of n-th run of identical symbols in A026513.

1, 1, 3, 3, 1, 1, 7, 1, 3, 3, 1, 7, 1, 1, 3, 3, 1, 1, 7, 1, 6, 1, 8, 1, 3, 3, 1, 1, 7, 1, 3, 3, 1, 7, 1, 1, 3, 3, 1, 8, 1, 6, 1, 7, 1, 1, 3, 3, 1, 1, 7, 1, 3, 3, 1, 7, 1, 1, 3, 3, 1, 1, 7, 1, 6, 1, 8, 1, 3, 3, 1, 1, 7, 1, 6, 1, 7, 1, 1, 3, 3, 1, 8, 1, 6, 1, 8, 1, 3, 3

Offset: 1

Clark Kimberling

nonn

Cf. A001285, A026513.

a(63) onward corrected by Sean A. Irvine, Oct 05 2019

A026492 a(n) = t(3n), where t = A001285 (Thue-Morse sequence).

Original entry on oeis.org

1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 2, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1

Offset: 0

Clark Kimberling

nonn

Michael De Vlieger, Table of n, a(n) for n = 0..10000
Michael Gilleland, Some Self-Similar Integer Sequences

Cf. A001285, A026498, A026513.

Array[1 + Mod[DigitCount[3 #, 2, 1], 2] &, 105, 0] (* Michael De Vlieger, Oct 03 2019 *)

a(n)=1+hammingweight(3*n)%2 \\ Charles R Greathouse IV, May 09 2016

Name and Pari adapted to match offset in A001285 by Sean A. Irvine, Oct 02 2019

A026498 a(n) = t(1+3n), where t = A001285 (Thue-Morse sequence).

Original entry on oeis.org

2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 1, 2, 2, 2, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 1, 2, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2

Offset: 0

Clark Kimberling

nonn

Michael De Vlieger, Table of n, a(n) for n = 0..10000

Cf. A001285, A026492, A026513.

Array[1 + Mod[DigitCount[3 # + 1, 2, 1], 2] &, 105, 0] (* Michael De Vlieger, Oct 03 2019 *)

a(n)=1+hammingweight(3*n+1)%2 \\ Charles R Greathouse IV, May 09 2016

Name and Pari adapted to match offset in A001285 by Sean A. Irvine, Oct 03 2019

cp's OEIS Frontend

A026515 a(n) = length of n-th run of identical symbols in A026513.

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A026492 a(n) = t(3n), where t = A001285 (Thue-Morse sequence).

Views

Author

Keywords

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Crossrefs

Programs

Mathematica

PARI

Extensions

A026498 a(n) = t(1+3n), where t = A001285 (Thue-Morse sequence).

Views

Author

Keywords

Links

Crossrefs

Programs

Mathematica

PARI

Extensions