A032907 Numbers whose base-10 representation Sum_{i=0..m} d(i)*10^i has d(0) <= d(1) >= d(2) <= ...

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20, 21, 22, 30, 31, 32, 33, 40, 41, 42, 43, 44, 50, 51, 52, 53, 54, 55, 60, 61, 62, 63, 64, 65, 66, 70, 71, 72, 73, 74, 75, 76, 77, 80, 81, 82, 83, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 110, 111, 120

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Links

• David A. Corneth, Table of n, a(n) for n = 1..5343 (all terms < 20000)

Crossrefs

Differs from A032873 and A009996.

Programs

PARI

is(n)=my(d=digits(n));r=1;forstep(i=#d,2,-1,if((-1)^(#d-i)*d[i]>(-1)^(#d-i)*d[i-1],r=0;break));r \\ David A. Corneth, Feb 01 2015