id:A080508 - OEIS Search Results

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Triangle whose n-th row contains the least set (ordered lexicographically) of n distinct positive integers whose geometric mean is an integer.

+0
4

1, 1, 4, 1, 2, 4, 1, 2, 3, 216, 1, 2, 3, 4, 324, 1, 2, 3, 4, 5, 6075000, 1, 2, 3, 4, 5, 6, 30375000, 1, 2, 3, 4, 5, 6, 7, 750453558750000, 1, 2, 3, 4, 5, 6, 7, 8, 19699405917187500, 1, 2, 3, 4, 5, 6, 7, 8, 9, 459652804734375000, 1, 2, 3, 4, 5, 6, 7 (list; table; graph; listen)

	OFFSET	`1,3`
	COMMENT	`The n-th row has the form {1,2,...,n-1,x}, where x is as small as possible.`
	CROSSREFS	`Cf. A080509, A080510, A080504, A080511.` `Sequence in context: A084454 A127812 A100353 this_sequence A063987 A010126 A021712` `Adjacent sequences: A080505 A080506 A080507 this_sequence A080509 A080510 A080511`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 20 2003`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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