A046576 First denominator and then numerator of the elements to the right of the central elements of the 1/4-Pascal triangle.

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

Offset

1,5

Links

Table of n, a(n) for n=1..85.

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: A010301 A335862 A200385 * A374035 A016493 A101626

Adjacent sequences: A046573 A046574 A046575 * A046577 A046578 A046579

Keyword

nonn

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers, Dec 14 1999

Status

approved