A069501 a(1) = 9; a(n) = smallest multiple of a(n-1) which is a palindromic square.

9, 12321, 102030201, 12345654321, 102234363432201, 10022014302620341022001, 10002000320024001610042002300020001

Offset

0,1

Links

Table of n, a(n) for n=0..6.

P. De Geest, Palindromic squares

Crossrefs

Cf. A069502.

Sequence in context: A321618 A055320 A271717 * A360762 A206461 A258719

Adjacent sequences: A069498 A069499 A069500 * A069502 A069503 A069504

Keyword

nonn,base,hard

Author

Amarnath Murthy, Mar 30 2002

Extensions

More terms from Sascha Kurz, Feb 07 2003

Status

approved