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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A073618 Consider Pascal's triangle A007318; a(n) = LCM of terms at +45 degree slope with the horizontal. 1
1, 1, 1, 2, 3, 12, 30, 60, 210, 840, 1260, 2520, 13860, 27720, 180180, 360360, 180180, 720720, 6126120, 12252240, 116396280, 232792560, 116396280, 232792560, 2677114440, 5354228880, 13385572200, 26771144400, 40156716600, 80313433200, 1164544781400, 2329089562800 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
COMMENTS
A025560 with an a(0) defined in addition. - R. J. Mathar, Sep 23 2008
LINKS
EXAMPLE
The ninth diagonal is 1,7,15,10,1 and the LCM of the terms = 210 hence a(8) = 30.
MAPLE
a:= n-> ilcm(seq(binomial(n-i, i), i=0..floor(n/2))):
seq(a(n), n=0..35); # Alois P. Heinz, Nov 27 2023
CROSSREFS
Sequence in context: A069062 A356017 A025560 * A247651 A305746 A221510
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Aug 07 2002
EXTENSIONS
More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 22 2003
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | 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 April 14 05:31 EDT 2024. Contains 371655 sequences. (Running on oeis4.)