A046532 - OEIS

A046532

First numerator and then denominator of 1/2-Pascal triangle (by row), excluding 2's.

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 1, 1, 5, 3, 1, 5, 1, 1, 1, 1, 7, 11, 11, 7, 1, 1, 1, 1, 9, 9, 1, 11, 1, 9, 1, 9, 1, 1, 1, 1, 11, 27, 20, 1, 20, 1, 27, 11, 1, 1, 1, 1, 13, 19, 1, 67, 40, 1, 67, 19, 1, 13, 1, 1, 1, 1, 15, 51

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,14

LINKS

Table of n, a(n) for n=1..75.

EXAMPLE

1/1;

1/1 1/1;

1/1 1/2 1/1;

1/1 3/2 3/2 1/1;

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;

without the 2's.

CROSSREFS

Cf. A046213.

Sequence in context: A328572 A016554 A046533 * A014421 A127197 A114231

Adjacent sequences: A046529 A046530 A046531 * A046533 A046534 A046535

KEYWORD

tabf,nonn,less

AUTHOR

Mohammad K. Azarian

STATUS

approved