A046600 First numerator and then denominator of each element of the 1/4-Pascal triangle (by row), excluding 1's and 4's.
5, 5, 9, 5, 2, 9, 13, 19, 19, 13, 17, 8, 19, 2, 8, 17, 21, 49, 35, 2, 35, 2, 49, 21, 25, 35, 2, 119, 35, 119, 35, 2, 25, 29, 95, 189, 259, 259, 189, 95, 29, 33, 31, 71, 112, 259, 2, 112, 71, 31, 33, 37, 157, 102, 183, 483, 2, 483, 2, 183, 102, 157, 37, 41, 97, 2, 565, 285
Offset: 1
Examples
1/1; 1/1 1/1; 1/1 1/4 1/1; 1/1 5/4 5/4 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.
Extensions
More terms from James Sellers, Dec 14 1999