A083985 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))).

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

Offset

0,1

Links

Table of n, a(n) for n=0..104.

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 * A109848 A371098 A104146

Adjacent sequences: A083982 A083983 A083984 * A083986 A083987 A083988

Keyword

base,nonn

Author

Amarnath Murthy, May 22 2003

Extensions

Corrected and extended by David Wasserman, Dec 07 2004

Status

approved