a(n) is the smallest positive integer k such that the base-n representation of 2^k has a pandigital ending of length n, or 0 if no such k exists.

A348209

a(n) is the smallest positive integer k such that the base-n representation of 2^k has a pandigital ending of length n, or 0 if no such k exists.

Terms

    a(0) =1a(1) =5a(2) =0a(3) =34a(4) =33a(5) =20a(6) =0a(7) =1689a(8) =7386a(9) =1971a(10) =34180a(11) =43983a(12) =262717a(13) =37576a(14) =0a(15) =617963a(16) =2818633a(17) =2136492a(18) =5325278a(19) =140997161a(20) =572340185a(21) =1140209730a(22) =800810806a(23) =5573697257a(24) =6694155083a(25) =15533636306a(26) =220798644390

External references