A152494 - OEIS

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A152494

1/3 of the number of permutations of 2 indistinguishable copies of 1..n with exactly 2 local maxima.

0, 1, 19, 235, 2539, 26119, 263863, 2648107, 26513875, 265250287, 2652876847 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	CROSSREFS	`Sequence in context: A135487 A025965 A025960 * A171158 A022033 A025938` `Adjacent sequences: A152491 A152492 A152493 * A152495 A152496 A152497`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net), Dec 06 2008`

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.