A046220 Distinct numbers in writing first numerator and then denominator of 1/2-Pascal triangle (by row).

1, 2, 3, 5, 7, 11, 9, 27, 20, 13, 19, 67, 40, 15, 51, 105, 147, 17, 33, 78, 126, 83, 111, 204, 273, 21, 305, 315, 477, 546, 23, 123, 407, 935, 792, 1023, 25, 73, 265, 671, 2519, 1815, 2046, 171, 338, 936, 3861, 6149, 29, 99, 847, 1274, 5733, 5005, 13871, 7722

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