id:A093415 - OEIS Search Results

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Triangle read by rows: a(n, k) is the denominator of (n+(n-1)+...+(n-k+1))/(1+2+...+k), 0 < k <= n.

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1, 1, 1, 1, 3, 1, 1, 3, 2, 1, 1, 1, 1, 5, 1, 1, 3, 2, 5, 3, 1, 1, 3, 1, 5, 3, 7, 1, 1, 1, 2, 5, 1, 7, 4, 1, 1, 3, 1, 1, 3, 7, 2, 9, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 1, 1, 1, 1, 5, 1, 7, 1, 3, 5, 11, 1, 1, 3, 2, 5, 3, 7, 4, 9, 5, 11, 6, 1, 1, 3, 1, 5, 3, 1, 2, 9, 5, 11, 3, 13, 1, 1, 1, 2, 1, 1, 7, 4, 3, 1, 11, 2 (list; table; graph; listen)

	OFFSET	`1,5`
	COMMENT	`A093415 gives the corresponding numerators. A093416(n) is the largest number in row n.`
	FORMULA	`a(n, k) = (k+1)/gcd(2n+2, k+1).`
	CROSSREFS	`Cf. A093412, A093417, A093416.` `Sequence in context: A010274 A137728 A054398 this_sequence A106749 A140216 A077196` `Adjacent sequences: A093412 A093413 A093414 this_sequence A093416 A093417 A093418`
	KEYWORD	`easy,nonn,tabl,frac`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 30 2004`
	EXTENSIONS	`Edited and extended by David Wasserman (wasserma(AT)spawar.navy.mil), Feb 01 2006`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

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