A072772 - OEIS

This site is supported by donations to The OEIS Foundation.

A072772

Y-projection of the tabular N X N -> N bijection A072764 and X-projection of its transpose A072766.

0, 1, 0, 2, 3, 1, 0, 0, 4, 5, 6, 7, 8, 2, 3, 1, 0, 0, 1, 0, 0, 0, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 4, 5, 6, 7, 8, 2, 3, 1, 0, 0, 1, 0, 0, 0, 2, 3, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	COMMENTS	`This corresponds to Lisp/Scheme function 'cdr' computed with respect to the lexicographical ordering of parenthesizations/planar binary trees (A014486), i.e. with planar binary trees this is equal to extracting the right subtree (from the root), with general parenthesizations equal to discarding the first sub-parenthesization of the top-level list and with general plane trees equal to discarding the leftmost branch from the root.`
	LINKS	`A. Karttunen, Gatomorphisms (with the complete Scheme source)`
	CROSSREFS	`Sequence in context: A054438 A174947 A010341 * A124314 A059087 A030373` `Adjacent sequences: A072769 A072770 A072771 * A072773 A072774 A072775`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen Jun 12 2002`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 07:43 EST 2012. Contains 205597 sequences.