A077192 {Concatenation of n-1 and n+1}/n where n is a member of A069871.

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: 1

Author

Amarnath Murthy, Nov 01 2002

Keywords

• nonn
• base

Examples

			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.

Extensions

More terms from Sascha Kurz, Feb 10 2003

Inserted missing terms a(12) and a(25) by Paolo P. Lava, Nov 05 2014

Offset changed by Sean A. Irvine, May 09 2025