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A046592
First denominator and then numerator of each element of the 1/4-Pascal triangle (by row), excluding 2's.
0
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
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
KEYWORD
tabf,nonn,frac,less
STATUS
approved