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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A051575 a(n) = LCM { Catalan(0), ..., Catalan(n) }. 2
1, 1, 2, 10, 70, 210, 4620, 60060, 60060, 1021020, 19399380, 19399380, 446185740, 2230928700, 13385572200, 388181593800, 12033629407800, 12033629407800, 12033629407800, 445244288088600, 445244288088600, 18255015811632600 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..400

MATHEMATICA

LCM@@@CatalanNumber@Range[0, Range[0, 20]] (* Vladimir Reshetnikov, Nov 17 2015 *)

PROG

(PARI) a(n) = if(n>1, lcm(a(n-1), binomial(2*n, n)/(n+1)), 1) \\ David A. Corneth, Aug 23 2016

CROSSREFS

Cf. A000108, A003046, A078491.

Sequence in context: A139715 A293914 A259114 * A121201 A166076 A217938

Adjacent sequences:  A051572 A051573 A051574 * A051576 A051577 A051578

KEYWORD

nonn

AUTHOR

N. J. A. Sloane

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 17 12:01 EDT 2018. Contains 316279 sequences. (Running on oeis4.)