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.

1, 35, 791, 3579, 13579, 135791, 3579135, 79135791, 357913579, 1357913579, 13579135791, 357913579135, 7913579135791, 35791357913579, 135791357913579, 1357913579135791, 35791357913579135, 791357913579135791, 3579135791357913579

Offset: 1

Author

Ctibor O. Zizka, Apr 05 2008

Keywords

• easy
• nonn
• base

Crossrefs

Cf. A141518.

Extensions

Edited by Charles R Greathouse IV, Apr 25 2010