A046217 First numerator and then denominator of 1/2-Pascal triangle (by row) excluding 1's and 2's.

3, 3, 5, 3, 5, 7, 11, 11, 7, 9, 9, 11, 9, 9, 11, 27, 20, 20, 27, 11, 13, 19, 67, 40, 67, 19, 13, 15, 51, 105, 147, 147, 105, 51, 15, 17, 33, 78, 126, 147, 126, 78, 33, 17, 19, 83, 111, 204, 273, 273, 204, 111, 83, 19, 21, 51, 305, 315, 477, 546, 477, 315, 305, 51, 21, 23

Offset: 1

Author

Mohammad K. Azarian

Keywords

• tabf
• nonn
• easy

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; ...
		

Crossrefs

Cf. A046213.

Extensions

More terms from James Sellers, Dec 13 1999