login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A068859 a(1) = 3 = 1*3; a(n) = smallest multiple of a(n-1) which is of the form k(k+2). 1

%I

%S 3,15,120,360,5040,201600,256032000,4064251968000,

%T 1024126980000259968000,29365589556381243259975904529351552000,

%U 82421263677202543043706796882184010324019881962069201381742720000

%N a(1) = 3 = 1*3; a(n) = smallest multiple of a(n-1) which is of the form k(k+2).

%e 120 = 10*12 belongs to this sequence and 360 = 18*20 is the smallest such multiple of 120.

%Y Cf. A068857, A068858.

%K nonn

%O 1,1

%A _Amarnath Murthy_, Mar 12 2002

%E More terms from _Sascha Kurz_, Mar 23 2002

%E Edited by _Don Reble_, Sep 12 2003

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 October 18 23:39 EDT 2019. Contains 328211 sequences. (Running on oeis4.)