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A077192
{Concatenation of n-1 and n+1}/n where n is a member of A069871.
1
8, 90, 92, 98, 992, 998, 9992, 9998, 99992, 99998, 999992, 999994, 999998, 9999992, 9999998, 99999992, 99999998, 999999992, 999999998, 9999999992, 9999999998, 99999999992, 99999999998, 999999999992, 999999999994, 999999999998, 9999999999992
OFFSET
0,1
EXAMPLE
8 and 90 are members since 24/3 = 8, 810/9 = 90.
999994 is in sequence because 999994 = 142856142858/142857 and 142857 is a member of A069871.
CROSSREFS
Cf. A069871.
Sequence in context: A105718 A045732 A371208 * A128304 A247728 A056784
KEYWORD
nonn,base
AUTHOR
Amarnath Murthy, Nov 01 2002
EXTENSIONS
More terms from Sascha Kurz, Feb 10 2003
Inserted missing terms a(12) and a(25) by Paolo P. Lava, Nov 05 2014
STATUS
approved