A083151 a(1) = 5, 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.

5, 505, 5555, 505505, 5005005005, 55055055055, 50155155155105, 5464353998993534645, 541025148469303964841520145, 513016415223221833242338122322514610315, 5130164152232218845439796446446979345488122322514610315

Offset

1,1

Comments

Multiplier for a(9) larger than 1000000000.

Links

Table of n, a(n) for n=1..11.

P. De Geest, WONplate 36

Crossrefs

Cf. A083152, A068666, A083147, A083149, A083153, A083155.

Sequence in context: A114066 A014287 A256704 * A128682 A228093 A068234

Adjacent sequences: A083148 A083149 A083150 * A083152 A083153 A083154

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(5)-a(9) corrected by Giovanni Resta, Sep 22 2019

a(10) from David A. Corneth, Sep 22 2019

a(11) from Giovanni Resta, Sep 24 2019

Status

approved