id:A058034 - OEIS Search Results

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Number of numbers whose cube root rounds to n.

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1, 3, 12, 27, 49, 75, 108, 147, 193, 243, 300, 363, 433, 507, 588, 675, 769, 867, 972, 1083, 1201, 1323, 1452, 1587, 1729, 1875, 2028, 2187, 2353, 2523, 2700, 2883, 3073, 3267, 3468, 3675, 3889, 4107, 4332, 4563, 4801, 5043, 5292, 5547, 5809, 6075, 6348 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) =3n^2+I(n mod 4 = 0) =A033428(n)+A011765(n) =A034131(n-1)-A034131(n-2)`
	EXAMPLE	`a(2)=12 since the cube roots of 4, 5, 6, ..., 15 all lie between 1.5 and 2.5.`
	CROSSREFS	`Cf. A003215 for number whose floor (or ceiling) of the cube root is n, A004277 for number whose square root rounds to n.` `Sequence in context: A074630 A033428 A018230 this_sequence A009259 A133647 A009222` `Adjacent sequences: A058031 A058032 A058033 this_sequence A058035 A058036 A058037`
	KEYWORD	`easy,nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Nov 22 2000`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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