login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A082736 LCM of n-th group of terms in A074147. 2
1, 4, 105, 120, 109395, 55440, 1856277675, 42325920, 966710699955, 7210803600, 303646176781042095, 43790142876480, 2432266195067253069525, 6338767304469600, 12793596869123737224933375, 659267412349963697280 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

FORMULA

a(1) = 1, a(2n) = LCM of next 2n even numbers. a(2n+1) = LCM of next 2n+1 odd numbers.

MAPLE

A061925 := proc(n) ceil(n^2/2)+1 ; end: A082736 := proc(n) seq(A061925(n-1)+2*k, k=0..n-1) ; ilcm(%) ; end: seq(A082736(n), n=1..20) ; # R. J. Mathar, Jul 17 2007

CROSSREFS

Cf. A074147, A074148, A074149, A082735.

Sequence in context: A013114 A281430 A158114 * A157039 A171117 A203313

Adjacent sequences:  A082733 A082734 A082735 * A082737 A082738 A082739

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Apr 14 2003

EXTENSIONS

More terms from R. J. Mathar, Jul 17 2007

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 7 12:19 EDT 2020. Contains 336276 sequences. (Running on oeis4.)