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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 56th year, we are closing in on 350,000 sequences, and we’ve crossed 9,700 citations (which often say “discovered thanks to the OEIS”).

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A083149 a(1) = 3, a(n) = smallest nontrivial palindromic multiple of a(n-1). a(n) is not equal to a(n-1) or a concatenation of a(n-1) with itself. 6
3, 6, 222, 444, 888, 21312, 42624, 468864, 40322304, 80644608, 802494494208, 213525880454088525312, 213525880454088738837880454088525312 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Multiplier for a(12) is larger than 2000000000.

LINKS

Table of n, a(n) for n=1..13.

P. De Geest, WONplate 36

CROSSREFS

Cf. A083150, A068665, A083147, A083151, A083153, A083155.

Sequence in context: A309258 A163423 A291126 * A348361 A290368 A068375

Adjacent sequences:  A083146 A083147 A083148 * A083150 A083151 A083152

KEYWORD

nonn,base,more

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 25 2003

EXTENSIONS

More terms from Patrick De Geest, Jun 05 2003

a(13) from Giovanni Resta, Sep 22 2019

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 December 3 14:43 EST 2021. Contains 349463 sequences. (Running on oeis4.)