login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 


a(h) = d(h,j) = lcm( f(h,j,1) ... f(h,j,h) ), when j=3.
0

%I #2 Feb 24 2006 03:00:00

%S 1,5,9,455,2618,315,271700,56751695,6930,3708514810,32152414840,

%T 135135,19749267715100,314645828225300,34918884,113543477411038675,

%U 473930651619825400,669278610,467655703593591713200

%N a(h) = d(h,j) = lcm( f(h,j,1) ... f(h,j,h) ), when j=3.

%F 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) )

%e a(2) = 5 = lcm(5,1)

%e a(3) = 9 = lcm(9,3,1)

%e a(5) = 2618 = lcm(17,7,11,2,1)

%e a(11) = 32152414840 = (41,19,35,8,29,13,23,5,17,7,1)

%Y Cf. A091342, A025558, A097382.

%K nonn

%O 0,2

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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 23 14:54 EDT 2024. Contains 376178 sequences. (Running on oeis4.)