A046226 First denominator and then numerator of elements to right of central elements of 1/2-Pascal triangle.

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

Links

Table of n, a(n) for n=1..77.

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

Adjacent sequences: A046223 A046224 A046225 * A046227 A046228 A046229

Keyword

tabf,nonn,frac,less

Author

Mohammad K. Azarian

Extensions

More terms from Sean A. Irvine, Apr 07 2021

Status

approved