id:A077806 - OEIS Search Results

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Greatest prime factor of numbers containing in their decimal representation only the digits 0 and 1.

+0
3

1, 5, 11, 5, 101, 11, 37, 5, 13, 101, 337, 11, 367, 37, 101, 5, 137, 13, 71, 101, 37, 337, 10111, 11, 193, 367, 13, 37, 653, 101, 271, 5, 9091, 137, 53, 13, 547, 71, 479, 101, 257, 37, 1217, 337, 101, 10111, 101111, 11, 991, 193, 137, 367, 4787, 13, 739, 37 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n) = A006530(A007088(n)).`
	EXAMPLE	`a(45) = A006530(A007088(45)) = A006530(101101) = A006530(71113*101) = 101.`
	CROSSREFS	`Cf. A077805, A020449.` `Sequence in context: A117069 A110353 A097720 this_sequence A019305 A079778 A088213` `Adjacent sequences: A077803 A077804 A077805 this_sequence A077807 A077808 A077809`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Nov 16 2002`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

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