A046218 Numerators of elements of 1/2-Pascal triangle (by row).

1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 5, 3, 5, 1, 1, 7, 11, 11, 7, 1, 1, 9, 9, 11, 9, 9, 1, 1, 11, 27, 20, 20, 27, 11, 1, 1, 13, 19, 67, 40, 67, 19, 13, 1, 1, 15, 51, 105, 147, 147, 105, 51, 15, 1, 1, 17, 33, 78, 126, 147, 126, 78, 33, 17, 1, 1, 19, 83, 111, 204

Offset: 1

Author

Mohammad K. Azarian

Keywords

• tabl
• nonn
• frac

Examples

			1/1; --> 1
1/1  1/1; --> 1 1
1/1  1/2  1/1; --> 1 1 1
1/1  3/2  3/2  1/1; --> 1 3 3 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 Sean A. Irvine, Apr 07 2021