id:A083985 - OEIS Search Results

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If k is a number with exactly two distinct decimal digits, say a and b, neither of which is 0 (i.e. a member of A101594), define the self-complement of k, SC(k), to be the number obtained by replacing a with b and vice versa. Then a(n) = gcd(A101594(n), SC(A101594(n))).

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3, 1, 1, 3, 1, 1, 9, 1, 3, 1, 6, 1, 2, 9, 2, 1, 1, 1, 1, 1, 9, 1, 1, 3, 1, 6, 1, 9, 2, 1, 12, 1, 3, 1, 1, 9, 1, 3, 1, 1, 1, 2, 9, 2, 1, 1, 2, 3, 1, 9, 1, 1, 3, 1, 3, 1, 9, 2, 1, 12, 1, 2, 3, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 7, 1, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 2, 3, 2, 1, 6 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`12 is the term corresponding to k = 48 as (48,84) = 1` `a(7) = gcd(18, 81) = 9.`
	CROSSREFS	`Cf. A083983, A083984, A083986.` `Cf. A101594.` `Sequence in context: A139378 A038500 A091840 this_sequence A109848 A104146 A133705` `Adjacent sequences: A083982 A083983 A083984 this_sequence A083986 A083987 A083988`
	KEYWORD	`base,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 22 2003`
	EXTENSIONS	`Corrected and extended by David Wasserman (wasserma(AT)spawar.navy.mil), Dec 07 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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