id:A080511 - OEIS Search Results

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

+0
5

1, 1, 3, 1, 2, 3, 1, 2, 3, 6, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 9, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 18, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 1, 2, 3, 4, 5, 6, 7, 8 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`The n-th row is {1,2,...,n-1,x}, where x=n if n is odd, x=3n/2 if n is even.`
	CROSSREFS	`Cf. A080512, A008619, A080504, A080508.` `Sequence in context: A004591 A079722 A079723 this_sequence A132399 A081485 A100337` `Adjacent sequences: A080508 A080509 A080510 this_sequence A080512 A080513 A080514`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 20 2003`

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.

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