id:A131997 - OEIS Search Results

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Array read by rows in which the n-th row contains odd numbers of all possible prime signatures with n divisors.

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1, 3, 9, 27, 15, 81, 243, 45, 729, 2187, 135, 105, 6561, 225, 19683, 405, 59049, 177147, 1215, 315, 675 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`Row 12 of A131886 is 2048 96 72 60` `so` `Row 12 of A131887 is 177147 1215 315 675`
	CROSSREFS	`Cf. A001055 A025487 A050322 A057567 A077569 A108464 A122819 A130839 A131802 A131886.` `Adjacent sequences: A131994 A131995 A131996 this_sequence A131998 A131999 A132000` `Sequence in context: A070346 A070345 A070359 this_sequence A122842 A070358 A036123`
	KEYWORD	`nonn,tabf`
	AUTHOR	`Alford Arnold (Alford1940(AT)aol.com), Aug 18 2007`

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.