OFFSET
1,2
FORMULA
a(n) = if n < 4 then 10^(n-1) else if r < 10 then 10*q + r else q + 1, where [q,r] are the base-11 digits of n+8. - M. F. Hasler, Oct 26 2019
EXAMPLE
a(1) = 1.
a(2) = 10 because "10" > "1".
a(3) = 100 because "100" > "10", but "100" < "11".
PROG
(PARI) A119589=vecsort(vector(100, n, Str(n)), , 1) \\ M. F. Hasler, Sep 03 2018, edited Oct 25 2019
(PARI) a(n)=if(n<4, 10^n\10, n=divrem(n+8, 11); n[2]<10, [10, 1]*n, n[1]+1) \\ M. F. Hasler, Oct 26 2019
CROSSREFS
KEYWORD
nonn,fini,full,base
AUTHOR
Dmitry Kamenetsky, Jun 01 2006, Jun 03 2006
STATUS
approved