id:A071345 - OEIS Search Results

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a(n) = the maximum number of lattice points touched by an origin-centered 4d-sphere with radius <= n.

+0
3

8, 32, 104, 192, 312, 576, 768, 960, 1344, 1872, 1920, 2496, 2976, 3072, 4608, 4608, 5760, 5760, 6912, 8064, 8064, 9672, 10368, 11520, 11520, 14976, 14976, 14976, 17424, 17784, 18432, 22464, 23808, 23808, 26208, 26208, 29760, 29952, 32832 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`a(n) = max(1=0 to n^2) A000118(i)`
	EXAMPLE	`a(4)=192 because the 4d-sphere with radius sqrt(14) touches 192 lattice points.`
	PROGRAM	`(FORTRAN) See A071339.`
	CROSSREFS	`Cf. A000118, A071339-A071347.` `Sequence in context: A019256 A014969 A139820 this_sequence A100312 A003201 A036393` `Adjacent sequences: A071342 A071343 A071344 this_sequence A071346 A071347 A071348`
	KEYWORD	`easy,nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), May 22 2002`
	EXTENSIONS	`Edited by Don Reble (djr(AT)nk.ca), Nov 06 2005`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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