A046221 Odd numbers on numerators 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, 27, 11, 1, 1, 13, 19, 67, 67, 19, 13, 1, 1, 15, 51, 105, 147, 147, 105, 51, 15, 1, 1, 17, 33, 147, 33, 17, 1, 1, 19, 83, 111, 273, 273, 111, 83, 19, 1, 1, 21, 51

Offset: 1

Author

Mohammad K. Azarian

Keywords

• tabf
• nonn
• frac
• less

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 5 3 5 1
1/1  7/2 11/2 11/2  7/2  1/1; --> 1 7 11 11 7 1
1/1  9/2  9/1 11/1  9/1  9/2  1/1; --> 1 9 9 11 9 9 1
1/1 11/2 27/2 20/1 20/1 27/2 11/2 1/1; --> 1 11 27 27 11 1
...
		

Crossrefs

Cf. A046213.

Extensions

More terms from Sean A. Irvine, Apr 07 2021