%I #15 Feb 06 2023 10:05:02
%S 3,3,5,5,15,15,7,21,35,35,21,7,9,9,45,45,11,55,165,165,55,11,495,495,
%T 13,715,1287,1287,715,13,91,1001,3003,3003,1001,91,15,105,455,1365,
%U 3003,5005,6435,6435,5005,3003,1365,455,105,15,17,17,153,153,19,171
%N Odd elements in Pascal's triangle that are not 1.
%e Irregular array begins:
%e 3, 3
%e 5, 5
%e 15, 15
%e 7, 21, 35, 35, 21, 7
%e 9, 9
%e 45, 45
%e ...
%Y Cf. A007318, A014421.
%K nonn,easy,tabf
%O 1,1
%A _Mohammad K. Azarian_
%E More terms from _Erich Friedman_
%E Offset corrected by _Mohammad K. Azarian_, Nov 19 2008