A046575 - OEIS

A046575

First numerator and then denominator of the elements to the right of the central elements of the 1/4-Pascal triangle.

1, 1, 1, 1, 5, 4, 1, 1, 9, 4, 1, 1, 19, 4, 13, 4, 1, 1, 8, 1, 17, 4, 1, 1, 35, 2, 49, 4, 21, 4, 1, 1, 119, 4, 35, 2, 25, 4, 1, 1, 259, 4, 189, 4, 95, 4, 29, 4, 1, 1, 112, 1, 71, 1, 31, 1, 33, 4, 1, 1, 483, 2, 183, 1, 102, 1, 157, 4, 37, 4, 1, 1, 849, 2, 285, 1, 565, 4, 97, 2, 41, 4, 1, 1

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

OFFSET

1,5

LINKS

Table of n, a(n) for n=1..84.

EXAMPLE

1/1; 1/1 1/1; 1/1 1/4 1/1; 1/1 5/4 5/4 1/1; 1/1 9/4 5/2 9/4 1/1; 1/1 13/4 19/4 19/4 13/4 1/1; 1/1 17/4 8/1 19/2 8/1 17/4 1/1; 1/1 21/4 49/4 35/2 35/2 49/4 21/4 1/1; ...

CROSSREFS

Cf. A046563.

Sequence in context: A320060 A132707 A213658 * A154739 A321044 A136564

Adjacent sequences: A046572 A046573 A046574 * A046576 A046577 A046578

KEYWORD

nonn

AUTHOR

Mohammad K. Azarian

EXTENSIONS

More terms from James Sellers, Dec 14 1999

STATUS

approved