Let T = {1,3,5,7,9,1,3,5,7,9,1,3,5,7,9, ... }; a(n) is n-th concatenation of n numbers from T.

A137309

Let T = {1,3,5,7,9,1,3,5,7,9,1,3,5,7,9, ... }; a(n) is n-th concatenation of n numbers from T.

Terms

    a(0) =1a(1) =35a(2) =791a(3) =3579a(4) =13579a(5) =135791a(6) =3579135a(7) =79135791a(8) =357913579a(9) =1357913579a(10) =13579135791a(11) =357913579135

External references