A071610 - OEIS

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A071610

Integer radii of the spheres around (0,0,0) that contain record numbers of lattice points.

1, 2, 3, 3, 4, 6, 7, 9, 10, 11, 13, 14, 17, 18, 19, 22, 25, 26, 27, 29, 30, 31, 34, 34, 34, 36, 37, 41, 43, 44, 47, 52, 55, 56, 59, 59, 60, 66, 66, 70, 74, 75, 80, 86, 89, 90, 91, 94, 100, 103, 104, 109, 115, 115, 119, 125, 134, 141, 146, 153, 153, 157, 168, 171 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`Multiple entries indicate that there is more than one covered sphere with an increase in the number of hit lattice points within a radius difference of 1.`
	FORMULA	`a(n) = Ceiling ( A071609(n)^(1/2) )`
	PROG	`(FORTRAN) see program given in A71609`
	CROSSREFS	`Cf. A071342-A071344 A071609 A071611.` `Sequence in context: A036018 A101195 A123552 * A198726 A117275 A081230` `Adjacent sequences: A071607 A071608 A071609 * A071611 A071612 A071613`
	KEYWORD	`nonn`
	AUTHOR	`Hugo Pfoertner (hugo(AT)pfoertner.org), May 25 2002`

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Last modified February 16 07:35 EST 2012. Contains 205876 sequences.