A046225 First numerator and then denominator of elements to right of central elements of 1/2-Pascal triangle.

1, 1, 1, 1, 3, 2, 1, 1, 5, 2, 1, 1, 11, 2, 7, 2, 1, 1, 9, 1, 9, 2, 1, 1, 20, 1, 27, 2, 11, 2, 1, 1, 67, 2, 19, 1, 13, 2, 1, 1, 147, 2, 105, 2, 51, 2, 15, 2, 1, 1, 126, 1, 78, 1, 33, 1, 17, 2, 1, 1