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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A083125 a(1) = 1, then the smallest number not occurring earlier such that the product of a pair of successive terms is a palindrome. 3
1, 2, 3, 11, 4, 22, 28, 9, 19, 17, 16, 29, 8, 34, 88, 7, 23, 18, 14, 31, 154, 13, 38, 231, 12, 21, 25, 209, 42, 6, 37, 15, 35, 143, 49, 77, 26, 33, 47, 303, 57, 333, 64, 66, 32, 132, 48, 44, 53, 404, 58, 364, 111, 5, 101, 55, 91, 99, 46, 437, 92, 236, 107, 422, 56, 121, 45 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture: except for multiples of 10, all natural numbers belong to this sequence. - Reinhard Zumkeller, May 02 2003

LINKS

Jean-Marc Falcoz, Table of n, a(n) for n = 1..2000

CROSSREFS

Cf. A083126, A083664.

Sequence in context: A046641 A336876 A083664 * A332661 A031335 A084743

Adjacent sequences:  A083122 A083123 A083124 * A083126 A083127 A083128

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 23 2003

EXTENSIONS

More terms from Reinhard Zumkeller, May 02 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 11 19:16 EDT 2020. Contains 336428 sequences. (Running on oeis4.)