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A080586 A run of 3*2^n 1's followed by a run of 3*2^n 2's, for n=0, 1, 2, ... 2
1, 1, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

LINKS

Table of n, a(n) for n=0..104.

FORMULA

a(n) = ( 3 - (-1)^A079944(A002264(n)) )/2, A079944(A002264(n))=floor(log[2](4*(floor((n+6)/3))/3)) - floor(log[2](floor((n+6)/3))) - Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Feb 24 2003

Also a(n) = 1+A079944(A002264(n))=floor(log[2](8*(floor((n+6)/3))/3)) - floor(log[2](floor((n+6)/3))) - Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Feb 24 2003

MAPLE

f := (c, n)->seq(c, i=1..3*2^n); [f(1, 0), f(2, 0), f(1, 1), f(2, 1), f(1, 2), f(2, 2), f(1, 3), f(2, 3)]; f;

MATHEMATICA

Flatten[Table[{PadRight[{}, 3*2^n, 1], PadRight[{}, 3*2^n, 2]}, {n, 0, 4}]] (* Harvey P. Dale, May 04 2014 *)

CROSSREFS

Cf. A079948, A080587.

Equals 1 + A080584.

Sequence in context: A102679 A025146 A067397 * A152906 A128522 A025454

Adjacent sequences:  A080583 A080584 A080585 * A080587 A080588 A080589

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Feb 23 2003

STATUS

approved

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Last modified September 17 09:00 EDT 2021. Contains 347478 sequences. (Running on oeis4.)