A046598 First numerator and then denominator of each element of the 1/4-Pascal triangle (by row), excluding 1's and 2's.

4, 5, 4, 5, 4, 9, 4, 5, 9, 4, 13, 4, 19, 4, 19, 4, 13, 4, 17, 4, 8, 19, 8, 17, 4, 21, 4, 49, 4, 35, 35, 49, 4, 21, 4, 25, 4, 35, 119, 4, 35, 119, 4, 35, 25, 4, 29, 4, 95, 4, 189, 4, 259, 4, 259, 4, 189, 4, 95, 4, 29, 4, 33, 4, 31, 71, 112, 259, 112, 71, 31, 33, 4, 37, 4, 157, 4, 102

Offset

1,1

Links

Table of n, a(n) for n=1..78.

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: A021026 A126128 A046565 * A245078 A276868 A182495

Adjacent sequences: A046595 A046596 A046597 * A046599 A046600 A046601

Keyword

tabf,nonn

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers, Dec 14 1999

Status

approved