id:A118677 - OEIS Search Results

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Number of Motzkin paths of length n in 3D with no level steps at odd level.

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1, 2, 6, 18, 60, 202, 718, 2600, 9748, 37270, 146058, 582548, 2367028, 9761890, 40844168, 173001018, 741193056, 3207480526, 14008373662, 61683982696, 273658651700, 1222314257450, 5493414465900, 24828463984518 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`EXPCONV of A090344 with itself, i.e. a(n) = sum_{k=0}^n binomial(n,k)A090344(k)A090344(n-k)`
	CROSSREFS	`Cf. A090344.` `Sequence in context: A002527 A005566 A005631 this_sequence A048117 A048118 A004113` `Adjacent sequences: A118674 A118675 A118676 this_sequence A118678 A118679 A118680`
	KEYWORD	`nonn`
	AUTHOR	`Max Alekseyev (maxal(AT)cs.ucsd.edu), May 19 2006`

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Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

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