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A046588
Distinct numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/4-Pascal triangle (by row).
0
1, 5, 4, 9, 19, 13, 8, 17, 35, 2, 49, 21, 119, 25, 259, 189, 95, 29, 112, 71, 31, 33, 483, 183, 102, 157, 37, 849, 285, 565, 97, 41, 1815, 1419, 1705, 759, 235, 45, 1617, 4543, 616, 497, 70, 3432, 11011, 7007, 1729, 637, 329, 53, 24739, 9009, 10465, 1183, 1603
OFFSET
1,2
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: A068397 A236405 A022344 * A086654 A286461 A152064
KEYWORD
tabf,nonn
EXTENSIONS
More terms from James A. Sellers, Dec 14 1999
STATUS
approved