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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A109935 Least common multiple of the digit reversals of the first n natural numbers. 0
1, 2, 6, 12, 60, 60, 420, 840, 2520, 2520, 27720, 27720, 859320, 35232120, 598946040, 36535708440, 2594035299240, 23346317693160, 303502130011080, 303502130011080, 303502130011080, 303502130011080, 1214008520044320 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(1) to a(12) are the same as in A003418.

LINKS

Table of n, a(n) for n=1..23.

MAPLE

rev:=proc(n) local nn, nnn: nn:=convert(n, base, 10): add(nn[nops(nn)+1-j]*10^(j-1), j=1..nops(nn)) end: a:=n->lcm(seq(rev(j), j=1..n)): seq(a(n), n=1..27); (Deutsch)

CROSSREFS

Sequence in context: A211418 A058312 A003418 * A065887 A072181 A283487

Adjacent sequences:  A109932 A109933 A109934 * A109936 A109937 A109938

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Jul 19 2005

EXTENSIONS

Corrected and extended by Emeric Deutsch and Erich Friedman, Aug 03 2005

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 May 22 05:03 EDT 2019. Contains 323473 sequences. (Running on oeis4.)