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A046218 Numerators of elements of 1/2-Pascal triangle (by row). 0
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, 20, 20, 27, 11, 1, 1, 13, 19, 67, 40, 67, 19, 13, 1, 1, 15, 51, 105, 147, 147, 105, 51, 15, 1, 1, 17, 33, 78, 126, 147, 126, 78, 33, 17, 1, 1, 19, 83, 111, 204 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,8

LINKS

Table of n, a(n) for n=1..71.

EXAMPLE

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; --> ...

1/1  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: A133332 A179680 A123562 * A046221 A220837 A187371

Adjacent sequences:  A046215 A046216 A046217 * A046219 A046220 A046221

KEYWORD

tabl,nonn,frac

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from Sean A. Irvine, Apr 07 2021

STATUS

approved

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Last modified May 8 15:40 EDT 2021. Contains 343666 sequences. (Running on oeis4.)