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 A204141 Numbers m such that both m and m/7 are zeroless pandigital numbers (A050289). 1

%I #11 Sep 25 2023 16:26:36

%S 864197523,865749213,867129543,871946523,873526941,893154276,

%T 893472615,893542671,927413865,928175346,941687523,946728153,

%U 951487236,951634782,953721846,956182374,957312468,958126743,963521874,963824715,964785213,971268543,971568234,972835164

%N Numbers m such that both m and m/7 are zeroless pandigital numbers (A050289).

%C There are precisely 24 such numbers.

%C The only number m such that m and m/8 are zeroless pandigital numbers is A050289(362879)=987654312.

%F a(n)=7*A204140(n).

%t 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 *)

%Y Cf. A050289, A204140.

%K nonn,base,fini,full

%O 1,1

%A _Zak Seidov_, Jan 11 2012

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Last modified September 17 04:45 EDT 2024. Contains 375985 sequences. (Running on oeis4.)