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A139434 Frieze pattern with 4 rows, read by diagonals. 2
1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 3, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

COMMENTS

Period 20: repeat [1, 1, 1, 1, 1, 2, 3, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 3, 2, 1]. - Wesley Ivan Hurt, Jun 05 2016

REFERENCES

Conway, J. H. and Guy, R. K., The Book of Numbers. New York: Springer-Verlag, p. 97, 1996.

LINKS

Table of n, a(n) for n=0..98.

EXAMPLE

The frieze pattern is

...1 1 1 1 1 1 1 ...

....1 2 2 1 3 1 2 ...

.....1 3 1 2 2 1 3 ...

......1 1 1 1 1 1 1 ...

CROSSREFS

Cf. A139438, A139458.

Sequence in context: A108714 A135508 A030413 * A113925 A328231 A180466

Adjacent sequences:  A139431 A139432 A139433 * A139435 A139436 A139437

KEYWORD

nonn,tabf

AUTHOR

N. J. A. Sloane, Jun 09 2008

STATUS

approved

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Last modified January 29 01:39 EST 2020. Contains 331328 sequences. (Running on oeis4.)