id:A084043 - OEIS Search Results

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Smallest palindromic multiple of n in which the digit string of n appears as sandwiched between at least a pair of digits, or 0 if n = 10k or no such number exists.

+0
2

111, 222, 333, 444, 555, 666, 777, 888, 999, 0, 1111, 82128, 41314, 414414, 55155, 61616, 317713, 41814, 41914, 0, 912219, 2222, 52325, 2324232, 52525, 82628, 82728, 828828, 52925, 0, 2131312, 23232, 3333, 2243422, 535535, 2136312, 43734, 88388 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Conjecture: a(n) = 0 iff n = 10k.`
	CROSSREFS	`Sequence in context: A082945 A088287 A082946 this_sequence A033284 A123673 A074842` `Adjacent sequences: A084040 A084041 A084042 this_sequence A084044 A084045 A084046`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 26 2003`
	EXTENSIONS	`Corrected and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jun 11 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research