id:A096180 - OEIS Search Results

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Triangle read by rows: fraction of integers having k of the first n positive integers as divisors is T(n,k)/A003418(n).

+0
4

1, 1, 1, 2, 3, 1, 4, 4, 3, 1, 16, 20, 16, 7, 1, 16, 20, 12, 6, 5, 1, 96, 136, 92, 48, 36, 11, 1, 192, 272, 136, 124, 66, 38, 11, 1, 576, 720, 464, 360, 206, 122, 58, 13, 1, 576, 720, 392, 384, 188, 154, 70, 26, 9, 1, 5760, 7776, 4640, 4232, 2264, 1728, 854, 330, 116, 19 (list; table; graph; listen)

	OFFSET	`1,4`
	COMMENT	`Sum of entries in n-th row is A003418(n), the least common multiple of integers 1 to n.`
	EXAMPLE	`Triangle begins:` `1` `1 1` `2 3 1` `4 4 3 1` `16 20 16 7 1` `16 20 12 6 5 1`
	CROSSREFS	`Sequence in context: A140757 A100035 A090244 this_sequence A034867 A055446 A104706` `Adjacent sequences: A096177 A096178 A096179 this_sequence A096181 A096182 A096183`
	KEYWORD	`nonn,tabl`
	AUTHOR	`Matthew Vandermast (ghodges14(AT)comcast.net), Jun 19, 2004`

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Last modified September 7 23:08 EDT 2008. Contains 143486 sequences.

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