A098750 a(n+1) = a(n) + 10's complement of first digit of a(n); a(0) = 0.

0, 10, 19, 28, 36, 43, 49, 55, 60, 64, 68, 72, 75, 78, 81, 83, 85, 87, 89, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 109, 118, 127, 136, 145, 154, 163, 172, 181, 190, 199, 208, 216, 224, 232, 240, 248, 256, 264, 272, 280, 288, 296, 304, 311, 318, 325, 332, 339, 346

Offset: 0

Author

Eric Angelini, Oct 01 2004

Keywords

• base
• easy
• nonn

Comments

0 -> 10 because 0 + (10 - 0) = 10; 10 -> 19 because 10 + (10 - 1) = 19; 19 -> 28 because 19 + (10 - 1) = 28; 28 -> 36 because 28 + (10 - 2) = 36...

The number of entries between m*10^k and (m+1)*10^k is approximately (10^k)/(10-m) (for 0Sam Alexander, Jan 06 2005

Links

• Harvey P. Dale, Table of n, a(n) for n = 0..1000

Programs

Mathematica

NestList[#+(10-First[IntegerDigits[#]])&,0,60] (* Harvey P. Dale, Oct 04 2012 *)

Extensions

More terms from Sam Alexander, Jan 06 2005