id:A139438 - OEIS Search Results

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Frieze pattern with 5 rows, read by diagonals.

+0
3

1, 1, 2, 3, 1, 1, 3, 5, 2, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 1, 1, 3, 5, 2, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 1, 1, 3, 5, 2, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 1, 1, 3, 5, 2, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 1, 1, 3, 5, 2, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 1, 1, 3, 5, 2, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 1, 1, 3, 5, 2 (list; graph; listen)

	OFFSET	`0,3`
	REFERENCES	`James Propp, The combinatorics of frieze patterns and Markoff numbers, arXiv:math/0511633v4.`
	FORMULA	`Four adjacent entries` `...A...` `.B...C.` `...D...` `satisfy D = (BC-1)/A.`
	EXAMPLE	`The frieze pattern is` `... 1 1 1 1 1 1 1 ...` `.....1 3 2 1 3 2 ...` `....1 2 5 1 2 5 1 ...` `.....1 3 2 1 3 2 ...` `... 1 1 1 1 1 1 1 ...`
	CROSSREFS	`Cf. A139434, A139458.` `Adjacent sequences: A139435 A139436 A139437 this_sequence A139439 A139440 A139441` `Sequence in context: A133569 A141071 A004648 this_sequence A135392 A071947 A139343`
	KEYWORD	`nonn,tabf`
	AUTHOR	`njas, Jun 09 2008`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.

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