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A046215 First numerator and then denominator of 1/2-Pascal triangle (by row), excluding 1's. 0
2, 3, 2, 3, 2, 5, 2, 3, 5, 2, 7, 2, 11, 2, 11, 2, 7, 2, 9, 2, 9, 11, 9, 9, 2, 11, 2, 27, 2, 20, 20, 27, 2, 11, 2, 13, 2, 19, 67, 2, 40, 67, 2, 19, 13, 2, 15, 2, 51, 2, 105, 2, 147, 2, 147, 2, 105, 2, 51, 2, 15, 2, 17, 2, 33, 78, 126, 147, 126, 78, 33, 17, 2, 19, 2, 83, 2, 111, 204 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..79.

EXAMPLE

1/1; -->

1/1 1/1; -->

1/1 1/2 1/1; --> 2

1/1 3/2 3/2 1/1; --> 3 2 3 2

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: A016026 A086757 A166985 * A256113 A256368 A057019

Adjacent sequences:  A046212 A046213 A046214 * A046216 A046217 A046218

KEYWORD

tabf,nonn,frac,less

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from Larry Reeves (larryr(AT)acm.org), Apr 06 2000

STATUS

approved

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Last modified July 28 17:15 EDT 2021. Contains 346335 sequences. (Running on oeis4.)