login
A204141
Numbers m such that both m and m/7 are zeroless pandigital numbers (A050289).
1
864197523, 865749213, 867129543, 871946523, 873526941, 893154276, 893472615, 893542671, 927413865, 928175346, 941687523, 946728153, 951487236, 951634782, 953721846, 956182374, 957312468, 958126743, 963521874, 963824715, 964785213, 971268543, 971568234, 972835164
OFFSET
1,1
COMMENTS
There are precisely 24 such numbers.
The only number m such that m and m/8 are zeroless pandigital numbers is A050289(362879)=987654312.
FORMULA
a(n)=7*A204140(n).
MATHEMATICA
Module[{lst=FromDigits/@Permutations[Range[9]], l1, l2}, l1=Select[lst, #<141093475&]; l2= Select[ lst, #>864*10^6&]; Select[l2, MemberQ[l1, #/7]&]] (* Harvey P. Dale, Sep 25 2023 *)
CROSSREFS
Sequence in context: A229800 A182239 A204406 * A214557 A214558 A183708
KEYWORD
nonn,base,fini,full
AUTHOR
Zak Seidov, Jan 11 2012
STATUS
approved