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Search: id:A098135
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| A098135 |
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a(h) = d(h,j) = lcm( f(h,j,1) ... f(h,j,h) ), when j=3. |
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1
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| 1, 5, 9, 455, 2618, 315, 271700, 56751695, 6930, 3708514810, 32152414840, 135135, 19749267715100, 314645828225300, 34918884, 113543477411038675, 473930651619825400, 669278610, 467655703593591713200
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OFFSET
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0,2
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FORMULA
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Given f(h, j, a) = ( [ ((a/gcd(a, h)) / gcd(j+1, (a/gcd(a, h)))) * (h(j+1)) ] - [ ((a/gcd(a, h)) / gcd(j+1, (a/gcd(a, h)))) * (ja) ]) / a then let a(h) = d(h, j) = lcm( f(h, j, 1) ... f(h, j, h) )
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EXAMPLE
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a(2) = 5 = lcm(5,1)
a(3) = 9 = lcm(9,3,1)
a(5) = 2618 = lcm(17,7,11,2,1)
a(11) = 32152414840 = (41,19,35,8,29,13,23,5,17,7,1)
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CROSSREFS
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Cf. A091342, A025558, A097382.
Sequence in context: A097086 A109076 A101683 this_sequence A112259 A099731 A091306
Adjacent sequences: A098132 A098133 A098134 this_sequence A098136 A098137 A098138
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KEYWORD
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nonn
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AUTHOR
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Scott C. Macfarlan (scottmacfarlan(AT)covance.com), Sep 27 2004
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