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A114986 Characteristic function of (A000201 prefixed with 0). 4
1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

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

Lord, E. A, Ranganathan, S. and Subramaniam, A., Stacking sequences and symmetry properties of trigonal vacancy-ordered phases, Phil. Mag. A 82 (2002) 255-268.

Index entries for characteristic functions

CROSSREFS

Essentially the same as A005614. Cf. A096270, A189479.

Sequence in context: A014807 A014366 A014723 * A014282 A014555 A188017

Adjacent sequences:  A114983 A114984 A114985 * A114987 A114988 A114989

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Feb 28 2006

STATUS

approved

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Last modified August 22 11:34 EDT 2019. Contains 326176 sequences. (Running on oeis4.)