A137309 - OEIS

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.

%I #6 Dec 27 2023 00:53:26

%S 1,35,791,3579,13579,135791,3579135,79135791,357913579,1357913579,

%T 13579135791,357913579135,7913579135791,35791357913579,

%U 135791357913579,1357913579135791,35791357913579135,791357913579135791,3579135791357913579

%N 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.

%Y Cf. A141518.

%K easy,nonn,base

%O 1,2

%A _Ctibor O. Zizka_, Apr 05 2008

%E Edited by _Charles R Greathouse IV_, Apr 25 2010