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A046226
First denominator and then numerator of elements to right of central elements of 1/2-Pascal triangle.
1
1, 1, 1, 1, 2, 3, 1, 1, 2, 5, 1, 1, 2, 11, 2, 7, 1, 1, 1, 9, 2, 9, 1, 1, 1, 20, 2, 27, 2, 11, 1, 1, 2, 67, 1, 19, 2, 13, 1, 1, 2, 147, 2, 105, 2, 51, 2, 15, 1, 1, 1, 126, 1, 78, 1, 33, 2, 17, 1, 1, 1, 273, 1, 204, 1, 111, 2, 83, 2, 19, 1, 1, 1, 477, 1, 315, 2
OFFSET
1,5
EXAMPLE
1/1; -->
1/1 1/1; --> 1 1
1/1 1/2 1/1; --> 1 1
1/1 3/2 3/2 1/1; --> 2 3
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.
Sequence in context: A249128 A299481 A304738 * A054722 A295260 A256187
KEYWORD
tabf,nonn,frac,less
EXTENSIONS
More terms from Sean A. Irvine, Apr 07 2021
STATUS
approved