A109911 Numbers n such that A109910(n) = n; that is, the 9's complement of the digit reversal of n is n.

18, 27, 36, 45, 54, 63, 72, 81, 1098, 1188, 1278, 1368, 1458, 1548, 1638, 1728, 1818, 1908, 2097, 2187, 2277, 2367, 2457, 2547, 2637, 2727, 2817, 2907, 3096, 3186, 3276, 3366, 3456, 3546, 3636, 3726, 3816, 3906, 4095, 4185, 4275, 4365, 4455, 4545, 4635

Offset: 1

Author

Amarnath Murthy, Jul 16 2005

Keywords

• base
• easy
• nonn

Comments

Obviously the terms have an even number of digits. a(n) = 0 mod 9.

Examples

			1728 is a member because its digit reversal is 8271 and 1728+8271 = 9999.
		

Links

• Indranil Ghosh, Table of n, a(n) for n = 1..20000

Crossrefs

Cf. A109910.

Extensions

More terms from Erich Friedman, Aug 08 2005

Corrected and edited. - David Wasserman, Oct 28 2008