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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A342232 a(1) = 2, a(n) = smallest palindromic nontrivial multiple of a(n-1) containing all decimal digits of a(n-1). 0
 2, 22, 242, 24442, 4204024, 42044444024, 4204486446844024, 420448648888888846844024, 42049644864886388888368846844694024 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Differs from A082777 at a(5). a(n) <= (10^A055642(a(n-1))+1)*a(n-1). If a(n-1) > 10 and the last digit of a(n-1) <= 4, then a(n) <= (10^(A055642(a(n-1))-1)+1)*a(n-1). LINKS EXAMPLE a(5) = 4204024 is a palindromic multiple of a(4) = 24442 and contains two '2' and three '4', all the digits of a(4). CROSSREFS Cf. A055642, A082777. Sequence in context: A322283 A151617 A334603 * A082777 A229465 A072076 Adjacent sequences:  A342229 A342230 A342231 * A342233 A342234 A342235 KEYWORD nonn,base,more AUTHOR Chai Wah Wu, Mar 08 2021 EXTENSIONS a(9) from Martin Ehrenstein, Mar 10 2021 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.

Last modified July 29 01:22 EDT 2021. Contains 346340 sequences. (Running on oeis4.)