A046587 Even numbers in writing first numerator and then denominator of each element of the 1/4-Pascal triangle (by row).

4, 4, 4, 4, 2, 4, 4, 4, 4, 4, 4, 8, 2, 8, 4, 4, 4, 2, 2, 4, 4, 4, 2, 4, 4, 2, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 112, 2, 112, 4, 4, 4, 102, 2, 2, 102, 4, 4, 4, 2, 4, 2, 2, 4, 2, 4, 4, 4, 4, 4, 2, 2, 2, 2, 4, 4, 4, 4, 4, 70, 2, 616, 4, 4, 616, 2, 70, 4, 4, 4, 2, 2, 4, 4, 3432, 3432, 4, 4, 2, 2, 4, 4, 4, 2, 4

Offset

1,1

Links

Table of n, a(n) for n=1..95.

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: A074803 A177229 A046595 * A147563 A136213 A088848

Adjacent sequences: A046584 A046585 A046586 * A046588 A046589 A046590

Keyword

tabf,nonn

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers, Dec 14 1999

Status

approved