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A201219 a(1) = 0; for n>1, a(n) = 1 if n is a power of 2, otherwise a(n) = 2. 2
0, 1, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 2, 2, 2, 2, 2, 2, 2, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

This solves the Emissary puzzle.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..16384

Puzzles Column, Emissary, Fall 2011, page 9, puzzle 6.

FORMULA

a(1) = 0, for n > 1, a(n) = 2 - A209229(n). - Antti Karttunen, Nov 19 2017

CROSSREFS

Cf. A043529, A209229.

Sequence in context: A229904 A160242 A043529 * A254315 A080942 A099812

Adjacent sequences:  A201216 A201217 A201218 * A201220 A201221 A201222

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 28 2011

STATUS

approved

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Last modified November 15 01:00 EST 2018. Contains 317224 sequences. (Running on oeis4.)