A046592 First denominator and then numerator of each element of the 1/4-Pascal triangle (by row), excluding 2's.

1, 1, 1, 1, 1, 1, 1, 1, 4, 1, 1, 1, 1, 1, 4, 5, 4, 5, 1, 1, 1, 1, 4, 9, 5, 4, 9, 1, 1, 1, 1, 4, 13, 4, 19, 4, 19, 4, 13, 1, 1, 1, 1, 4, 17, 1, 8, 19, 1, 8, 4, 17, 1, 1, 1, 1, 4, 21, 4, 49, 35, 35, 4, 49, 4, 21, 1, 1, 1, 1, 4, 25, 35, 4, 119, 1, 35, 4, 119, 35, 4, 25, 1, 1, 1, 1, 4, 29

Offset

1,9

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 4 1 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: A070010 A293768 A046564 * A369875 A334432 A370130

Adjacent sequences: A046589 A046590 A046591 * A046593 A046594 A046595

Keyword

tabf,nonn,frac,less

Author

Mohammad K. Azarian

Status

approved