A046623 - OEIS

%I #12 Jun 22 2013 16:05:41

%S 1,1,1,1,1,1,1,1,5,1,1,1,1,1,5,5,1,1,1,1,5,11,5,5,11,1,1,1,1,5,5,23,5,

%T 23,5,1,1,1,1,5,21,5,39,5,5,39,5,21,1,1,1,1,5,1,1,17,1,17,1,5,1,1,1,1,

%U 5,31,5,1,29,1,1,29,5,5,31,1,1,1,1

%N Odd numbers in writing first denominator and then numerator of each element of the 1/5-Pascal triangle (by row).

%e 1/1; --> 1 1

%e 1/1 1/1; --> 1 1 1 1

%e 1/1 1/5 1/1; --> 1 1 5 1 1 1

%e 1/1 6/5 6/5 1/1; --> 1 1 5 5 1 1

%e 1/1 11/5 12/5 11/5 1/1; --> ...

%e 1/1 16/5 23/5 23/5 16/5 1/1;

%e 1/1 21/5 39/5 46/5 39/5 21/5 1/1;

%e 1/1 26/5 12/1 17/1 17/1 12/1 26/5 1/1; ...

%Y Cf. A046601.

%K tabf,frac,nonn,less

%O 1,9

%A _Mohammad K. Azarian_