Given a number n with k digits d_i, enumerate the positions of the digits starting from LSD = 1 to MSD = k. Sequence lists the numbers such that Sum_{i=1..k} d_i/i and Sum_{i=1..k} i/d_i are equal and integer.

A260487

Given a number n with k digits d_i, enumerate the positions of the digits starting from LSD = 1 to MSD = k. Sequence lists the numbers such that Sum_{i=1..k} d_i/i and Sum_{i=1..k} i/d_i are equal and integer.

Terms

    a(0) =1a(1) =21a(2) =321a(3) =2612a(4) =4321a(5) =52612a(6) =54321a(7) =352342a(8) =352622a(9) =352641a(10) =354612a(11) =358312a(12) =358611a(13) =652612a(14) =654321a(15) =7352342a(16) =7352622a(17) =7352641a(18) =7354612a(19) =7358312a(20) =7358611a(21) =7652612a(22) =7654321a(23) =27155485a(24) =27351684a(25) =27353616a(26) =27355325a(27) =27457722a(28) =27457741a(29) =27655315

External references