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A098135 a(h) = d(h,j) = lcm( f(h,j,1) ... f(h,j,h) ), when j=3. 0
1, 5, 9, 455, 2618, 315, 271700, 56751695, 6930, 3708514810, 32152414840, 135135, 19749267715100, 314645828225300, 34918884, 113543477411038675, 473930651619825400, 669278610, 467655703593591713200 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..18.

FORMULA

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) )

EXAMPLE

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)

CROSSREFS

Cf. A091342, A025558, A097382.

Sequence in context: A097086 A109076 A101683 * A112259 A258150 A099731

Adjacent sequences:  A098132 A098133 A098134 * A098136 A098137 A098138

KEYWORD

nonn

AUTHOR

Scott C. Macfarlan (scottmacfarlan(AT)covance.com), Sep 27 2004

STATUS

approved

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Last modified February 20 18:57 EST 2018. Contains 299381 sequences. (Running on oeis4.)