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A046216 First denominator and then numerator of 1/2-Pascal triangle (by row), excluding 1's. 0
2, 2, 3, 2, 3, 2, 5, 3, 2, 5, 2, 7, 2, 11, 2, 11, 2, 7, 2, 9, 9, 11, 9, 2, 9, 2, 11, 2, 27, 20, 20, 2, 27, 2, 11, 2, 13, 19, 2, 67, 40, 2, 67, 19, 2, 13, 2, 15, 2, 51, 2, 105, 2, 147, 2, 147, 2, 105, 2, 51, 2, 15, 2, 17, 33, 78, 126, 147, 126, 78, 33, 2, 17, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..74.

EXAMPLE

1/1; -->

1/1 1/1; -->

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

1/1 3/2 3/2 1/1; --> 2 3 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: A235922 A255598 A060324 * A105560 A331597 A339502

Adjacent sequences:  A046213 A046214 A046215 * A046217 A046218 A046219

KEYWORD

tabf,nonn,frac,less

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from Sean A. Irvine, Apr 07 2021

STATUS

approved

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Last modified June 18 04:41 EDT 2021. Contains 345098 sequences. (Running on oeis4.)