A046532 First numerator and then denominator of 1/2-Pascal triangle (by row), excluding 2's.
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 1, 1, 5, 3, 1, 5, 1, 1, 1, 1, 7, 11, 11, 7, 1, 1, 1, 1, 9, 9, 1, 11, 1, 9, 1, 9, 1, 1, 1, 1, 11, 27, 20, 1, 20, 1, 27, 11, 1, 1, 1, 1, 13, 19, 1, 67, 40, 1, 67, 19, 1, 13, 1, 1, 1, 1, 15, 51
Offset: 1
Examples
1/1; 1/1 1/1; 1/1 1/2 1/1; 1/1 3/2 3/2 1/1; 1/1 5/2 3/1 5/2 1/1; 1/1 7/2 11/2 11/2 7/2 1/1; 1/1 9/2 9/1 11/1 9/1 9/2 1/1; 1/1 11/2 27/2 20/1 20/1 27/2 11/2 1/1; without the 2's.
Crossrefs
Cf. A046213.