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A093412
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Triangle read by rows: a(n, k) is the numerator of (n+(n-1)+...+(n-k+1))/(1+2+...+k), 0 < k <= n.
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8
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1, 2, 1, 3, 5, 1, 4, 7, 3, 1, 5, 3, 2, 7, 1, 6, 11, 5, 9, 4, 1, 7, 13, 3, 11, 5, 9, 1, 8, 5, 7, 13, 2, 11, 5, 1, 9, 17, 4, 3, 7, 13, 3, 11, 1, 10, 19, 9, 17, 8, 15, 7, 13, 6, 1, 11, 7, 5, 19, 3, 17, 2, 5, 7, 13, 1, 12, 23, 11, 21, 10, 19, 9, 17, 8, 15, 7, 1, 13, 25, 6, 23, 11, 3, 5, 19, 9, 17, 4
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| A093415 gives the corresponding denominators.
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FORMULA
| a(n, k) = (2n+1-k)/gcd(2n+1-k, k+1).
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CROSSREFS
| Cf. A093413, A093414, A093415.
Sequence in context: A129322 A089984 A062105 * A119355 A076110 A117584
Adjacent sequences: A093409 A093410 A093411 * A093413 A093414 A093415
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KEYWORD
| easy,nonn,tabl,frac
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 30 2004
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EXTENSIONS
| Edited and extended by David Wasserman (wasserma(AT)spawar.navy.mil), Feb 01 2006
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