A046591 First numerator and then denominator of each element of the 1/4-Pascal triangle (by row), excluding 2's.

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, 9, 4, 1, 1, 1, 1, 13, 4, 19, 4, 19, 4, 13, 4, 1, 1, 1, 1, 17, 4, 8, 1, 19, 8, 1, 17, 4, 1, 1, 1, 1, 21, 4, 49, 4, 35, 35, 49, 4, 21, 4, 1, 1, 1, 1, 25, 4, 35, 119, 4, 35, 1, 119, 4, 35, 25, 4, 1, 1, 1, 1, 29, 4

Offset

1,10

Links

Table of n, a(n) for n=1..88.

Example

1/1; --> 1 1
1/1 1/1; --> 1 1 1 1
1/1 1/4 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: A379545 A066701 A046563 * A361236 A119350 A016528

Adjacent sequences: A046588 A046589 A046590 * A046592 A046593 A046594

Keyword

tabf,nonn,frac,less

Author

Mohammad K. Azarian

Status

approved