id:A069508 - OEIS Search Results

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a(1) = 6; a(n) = smallest palindromic number of the form k*a(n-1) + 1 with k > 1.

+0
6

6, 55, 111, 1111, 11111, 111111, 1111111, 11111111, 111111111, 1111111111, 11111111111, 111111111111, 1111111111111, 11111111111111, 111111111111111, 1111111111111111, 11111111111111111, 111111111111111111 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`a(n) = {10^(n)-1}/9 for n > 2.`
	CROSSREFS	`Cf. A069505, A069506, A069507, A069509, A069510.` `Sequence in context: A119218 A085066 A085067 this_sequence A079465 A061792 A066514` `Adjacent sequences: A069505 A069506 A069507 this_sequence A069509 A069510 A069511`
	KEYWORD	`nonn,base`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Mar 30 2002.`
	EXTENSIONS	`More terms from Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 11 2003.`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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