id:A036559 - OEIS Search Results

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Squared distances that cannot arise in any Barlow packing of spheres of diameter sqrt(3) (the scale being the simplest one that makes this an integer sequence).

+0
2

1, 2, 4, 5, 7, 10, 13, 14, 16, 23, 26, 28, 38, 40, 42, 52, 58, 64, 74, 90, 104, 106, 112, 122, 138, 154, 160, 168, 170, 186, 202, 208, 218, 230, 232, 234, 250, 256, 266, 282, 296, 298, 314, 330, 346, 360, 362, 378, 394, 410, 416, 424, 426, 442, 448 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`Conjectured to consist of 4^n times 1 or 7 or 13 or 16k+10 together with 2, 5, 14, 23, 38, 230.`
	CROSSREFS	`Complement of A036558.` `Sequence in context: A058212 A007997 A123120 this_sequence A083022 A062463 A056716` `Adjacent sequences: A036556 A036557 A036558 this_sequence A036560 A036561 A036562`
	KEYWORD	`nonn`
	AUTHOR	`J. H. Conway (conway(AT)math.princeton.edu), njas`

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Last modified July 25 02:12 EDT 2008. Contains 142294 sequences.

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