|
|
A188643
|
|
Numbers which are not a multiple of the product of their digits.
|
|
6
|
|
|
10, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
MATHEMATICA
|
t={}; Do[p=Times@@IntegerDigits[n]; If[p==0, AppendTo[t, n], If[!IntegerQ[n/p], AppendTo[t, n]]], {n, 99}]; t (* Jayanta Basu, May 05 2013 *)
nmpQ[n_]:=Module[{idn=IntegerDigits[n], pr}, pr=If[MemberQ[idn, 0], Pi, Times@@ idn]; Mod[n, pr]!=0]; Select[Range[100], nmpQ] (* Harvey P. Dale, Oct 13 2018 *)
|
|
PROG
|
(Haskell)
import Data.List (elemIndices)
a188643 n = a188643_list !! (n-1)
a188643_list = map succ $ elemIndices 0 $ map a188642 [1..]
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|