id:A059268 - OEIS Search Results

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Concatenate subsequences [2^0, 2^1, ..., 2^n] for n = 0, 1, 2, ...

+0
11

1, 1, 2, 1, 2, 4, 1, 2, 4, 8, 1, 2, 4, 8, 16, 1, 2, 4, 8, 16, 32, 1, 2, 4, 8, 16, 32, 64, 1, 2, 4, 8, 16, 32, 64, 128, 1, 2, 4, 8, 16, 32, 64, 128, 256, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 1, 2, 4, 8, 16, 32, 64 (list; table; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Triangular array T(n,k) read by rows, where T(n,k) = i!j! times coefficient of x^ny^k in exp(x+2y).`
	LINKS	`J. L. Arregui, Tangent and Bernoulli numbers related to Motzkin and Catalan numbers by means of numerical triangles.`
	FORMULA	`E.g.f.: exp(x+2*y) (T coordinates).`
	CROSSREFS	`Adjacent sequences: A059265 A059266 A059267 this_sequence A059269 A059270 A059271` `Sequence in context: A085683 A081532 A131074 this_sequence A123937 A138882 A074634`
	KEYWORD	`nonn,tabl`
	AUTHOR	`njas, Jan 23 2001`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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