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A046563
First numerator and then denominator of each element of the 1/4-Pascal triangle (by row). To get a 1/4-Pascal triangle, replace "2" in the third row of the Pascal triangle with "1/4" and calculate all other rows as in the Pascal triangle.
37
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, 1, 1, 25, 4, 35, 2, 119, 4, 35, 1, 119, 4, 35, 2, 25, 4, 1, 1, 1, 1
OFFSET
1,10
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
Sequence in context: A053231 A379545 A066701 * A046591 A361236 A119350
KEYWORD
tabf,nonn,less
STATUS
approved