id:A062161 - OEIS Search Results

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Boustrophedon transform of n mod 2.

+0
5

0, 1, 2, 4, 12, 36, 142, 624, 3192, 18256, 116282, 814144, 6219972, 51475776, 458790022, 4381112064, 44625674352, 482962852096, 5534347077362, 66942218896384, 852334810990332, 11394877025289216 (list; graph; listen)

	OFFSET	`0,3`
	LINKS	`Index entries for sequences related to boustrophedon transform`
	FORMULA	`E.g.f.: (sec(x)+tan(x))sinh(x); a(n)=(A000667(n)-A062162(n))/2. - Paul Barry (pbarry(AT)wit.ie), Jan 21 2005` `a(n) = Sum{k, k>=0} binomial(n, 2k+1)*A000111(n-2k-1) . - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Aug 28 2005`
	CROSSREFS	`a(2n) = A009747(n), a(2n+1) = A002084(n), cf. A062272.` `Sequence in context: A009152 A081443 A086647 this_sequence A046993 A010551 A111942` `Adjacent sequences: A062158 A062159 A062160 this_sequence A062162 A062163 A062164`
	KEYWORD	`nonn,easy`
	AUTHOR	`Frank.Ellermann(AT)t-online.de, Jun 10 2001`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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