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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 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.)