id:A033178 - OEIS Search Results

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Number of multisets of n positive integers with equal sum and product.

+0
5

1, 1, 1, 3, 1, 2, 2, 2, 2, 3, 2, 4, 2, 2, 2, 4, 2, 4, 2, 4, 2, 4, 1, 5, 4, 3, 3, 5, 2, 4, 3, 5, 2, 3, 2, 6, 3, 3, 4, 7, 2, 5, 2, 4, 4, 5, 2, 5, 4, 4, 3, 7, 2, 5, 4, 5, 4, 4, 2, 9, 3, 4, 4, 7, 2, 5, 5, 4, 3, 6, 3, 9, 4, 3, 3, 6, 3, 5, 2, 7, 4, 5, 2, 10, 5, 4, 5, 8, 2, 6, 3, 6, 3, 6, 5, 6, 5, 4, 5, 8, 3, 6, 3, 5 (list; graph; listen)

	OFFSET	`2,4`
	COMMENT	`The multiset {n^1, 2^1, 1^(n-2)} has n elements and sum = product = 2n. Hence a(n) >= 1.`
	REFERENCES	`R. K. Guy, 'Unsolved Problems in Number Theory' (Section D24).`
	CROSSREFS	`Cf. A033179.` `Sequence in context: A115310 A139381 A038575 this_sequence A029418 A085247 A003016` `Adjacent sequences: A033175 A033176 A033177 this_sequence A033179 A033180 A033181`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.

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