A046582 First denominator and then numerator of each element of the 1/4-Pascal triangle (by row), excluding 4's.
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 1, 1, 1, 1, 9, 2, 5, 9, 1, 1, 1, 1, 13, 19, 19, 13, 1, 1, 1, 1, 17, 1, 8, 2, 19, 1, 8, 17, 1, 1, 1, 1, 21, 49, 2, 35, 2, 35, 49, 21, 1, 1, 1, 1, 25, 2, 35, 119, 1, 35, 119, 2, 35, 25, 1, 1, 1, 1, 29
Offset: 1
Examples
1/1; --> 1 1 1/1 1/1; --> 1 1 1 1 1/1 1/4 1/1; --> 1 1 1 1 1/1 5/4 5/4 1/1; --> 1 1 5 5 1 1 1/1 9/4 5/2 9/4 1/1; --> ... 1/1 13/4 19/4 19/4 13/4 1/1; 1/1 17/4 8/1 19/2 8/1 17/4 1/1; 1/1 21/4 49/4 35/2 35/2 49/4 21/4 1/1; ...
Crossrefs
Cf. A046563.