A057516 - OEIS

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A057516

Number of sea-level valleys in Catalan mountain ranges encoded by A014486.

0, 0, 1, 0, 2, 1, 1, 0, 0, 3, 2, 2, 1, 1, 2, 1, 1, 0, 0, 1, 0, 0, 0, 4, 3, 3, 2, 2, 3, 2, 2, 1, 1, 2, 1, 1, 1, 3, 2, 2, 1, 1, 2, 1, 1, 0, 0, 1, 0, 0, 0, 2, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 5, 4, 4, 3, 3, 4, 3, 3, 2, 2, 3, 2, 2, 2, 4, 3, 3, 2, 2, 3, 2, 2, 1, 1, 2, 1, 1, 1, 3, 2, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	FORMULA	`a(0) = 0, a(n) = nops(binexp2pars(A014486[n]))-1 = A057515[n]-1`
	CROSSREFS	`Cf. A057514.` `Sequence in context: A179854 A125753 A147701 * A178471 A160381 A089311` `Adjacent sequences: A057513 A057514 A057515 * A057517 A057518 A057519`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen Sep 03 2000`

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Last modified February 16 08:13 EST 2012. Contains 205893 sequences.