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A139458 Frieze pattern of order 6, with 5 rows, read by diagonals. 2
1, 1, 1, 1, 1, 1, 2, 3, 4, 1, 1, 2, 3, 1, 1, 1, 2, 1, 2, 1, 1, 1, 3, 2, 1, 1, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 1, 1, 2, 3, 1, 1, 1, 2, 1, 2, 1, 1, 1, 3, 2, 1, 1, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4, 1, 1, 2, 3, 1, 1, 1, 2, 1, 2, 1, 1, 1, 3, 2, 1, 1, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 2, 3, 4 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,7

COMMENTS

Period 30: repeat [1, 1, 1, 1, 1, 1, 2, 3, 4, 1, 1, 2, 3, 1, 1, 1, 2, 1, 2, 1, 1, 1, 3, 2, 1, 1, 4, 3, 2, 1]. - Wesley Ivan Hurt, Jun 05 2016

LINKS

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

K. Bauer and R. J. Marsh, Ptolemy relations for punctured discs, arXiv:0711.1443v1.

EXAMPLE

The frieze pattern is:

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

.... 1 2 2 2 1 4 ...

... 3 1 3 3 1 3 8 ...

.... 2 1 4 1 2 2 ...

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

CROSSREFS

Cf. A139434, A139438.

Sequence in context: A086198 A086196 A138297 * A277543 A190594 A104412

Adjacent sequences:  A139455 A139456 A139457 * A139459 A139460 A139461

KEYWORD

nonn,tabf

AUTHOR

N. J. A. Sloane, Jun 09 2008

STATUS

approved

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Last modified January 24 13:24 EST 2020. Contains 331193 sequences. (Running on oeis4.)