

A038687


Concatenate i >= 1 and j >= 1, then sort.


2



11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 28, 29, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63, 64, 65, 66, 67, 68, 69, 71, 72, 73, 74, 75, 76, 77, 78, 79, 81, 82, 83, 84, 85, 86, 87, 88, 89, 91, 92, 93, 94, 95, 96, 97, 98, 99, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112
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OFFSET

1,1


COMMENTS



LINKS



FORMULA



MAPLE

isA038687 := proc(n)
local nzdigs, d ;
nzdigs := 0 ;
for d in convert(n, base, 10) do
if d > 0 then
nzdigs := nzdigs+1 ;
end if ;
end do:
simplify(nzdigs>=2 ) ;
end proc:
for n from 1 to 120 do
if isA038687(n) then
printf("%d, ", n) ;
end if;


MATHEMATICA

Select[Range[11, 99], DigitCount[#, 10, 0]==0&] (* Harvey P. Dale, Nov 14 2013 *)


PROG



CROSSREFS



KEYWORD

nonn,base,easy


AUTHOR



STATUS

approved



