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A069501 a(1) = 9; a(n) = smallest multiple of a(n-1) which is a palindromic square. 1
9, 12321, 102030201, 12345654321, 102234363432201, 10022014302620341022001, 10002000320024001610042002300020001 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

LINKS

P. De Geest, Palindromic squares

CROSSREFS

Cf. A069502.

Sequence in context: A137063 A175987 A055320 * A030254 A206461 A140596

Adjacent sequences:  A069498 A069499 A069500 * A069502 A069503 A069504

KEYWORD

nonn,base,hard

AUTHOR

Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 30 2002.

EXTENSIONS

More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Feb 07 2003.

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.