id:A071347 - OEIS Search Results

Search: id:A071347

Displaying 1-1 of 1 results found.

page 1

a(n) = greatest positive r <= n, such that the origin-centered 4d-sphere of radius sqrt(r) touches A071345(n) lattice points.

+0
9

1, 3, 9, 15, 18, 30, 42, 54, 78, 90, 114, 126, 150, 186, 210, 210, 270, 270, 330, 390, 390, 450, 510, 570, 594, 630, 630, 750, 810, 882, 930, 990, 1050, 1050, 1170, 1170, 1350, 1386, 1470, 1530, 1650, 1710, 1710, 1890, 1890, 1890, 1890, 2250, 2310 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`a(4)=15 because the largest 4d-sphere with radius <= 4 to touch A071345(4)=192 points has radius sqrt(15).`
	PROGRAM	`(FORTRAN) See A071339.`
	CROSSREFS	`Cf. A071339-A071346.` `Adjacent sequences: A071344 A071345 A071346 this_sequence A071348 A071349 A071350` `Sequence in context: A043381 A100331 A071123 this_sequence A093414 A123998 A117105`
	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`

page 1

Search completed in 0.002 seconds

Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

AT&T Labs Research