id:A135412 - OEIS Search Results

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Integers which are Heronian means of two distinct nonnegative integers.

+0
1

3, 6, 7, 9, 12, 13, 14, 15, 18, 19, 21, 24, 26, 27, 28, 30, 31, 33, 35, 36, 37, 38, 39, 42, 43, 45, 48, 49, 51, 52, 54, 56, 57, 60, 61, 62, 63, 65, 66, 67, 69, 70, 72, 73, 74, 75, 76, 77, 78, 79, 81, 84, 86, 87, 90, 91, 93, 95, 96, 97, 98, 99, 102, 103, 104, 105, 108, 109, 111 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`If "nonnegative" is changed to "positive", most numbers divisible by 3 drop out of the sequence.`
	LINKS	`Planet Math, Heronian mean`
	EXAMPLE	`a(19) = 35 since (5+sqrt(400)+80)/3 = 35`
	CROSSREFS	`Cf. A050931.` `Sequence in context: A026406 A047558 A160217 this_sequence A082847 A047242 A083951` `Adjacent sequences: A135409 A135410 A135411 this_sequence A135413 A135414 A135415`
	KEYWORD	`easy,nonn`
	AUTHOR	`Pahikkala Jussi (pahio(AT)wakkanet.fi), Feb 17 2008`

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.

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