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A046561
Distinct odd numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/3-Pascal triangle (by row).
0
1, 3, 7, 5, 25, 13, 55, 31, 19, 203, 49, 73, 95, 105, 295, 145, 737, 583, 179, 1683, 1177, 1903, 71, 37, 3575, 2665, 325, 6435, 8099, 1225, 43, 13585, 33319, 7371, 3913, 4865, 505, 111, 379, 2227, 3485, 885, 13889, 1045, 535, 48773, 18259, 5415, 593, 61
OFFSET
1,2
EXAMPLE
1/1; -->
1/1 1/1; --> 1
1/1 1/3 1/1; --> 3
1/1 4/3 4/3 1/1; -->
1/1 7/3 8/3 7/3 1/1; --> 7
1/1 10/3 5/1 5/1 10/3 1/1;
1/1 13/3 25/3 10/1 25/3 13/3 1/1;
1/1 16/3 38/3 55/3 55/3 38/3 16/3 1/1; ...
CROSSREFS
Cf. A046534.
Sequence in context: A354544 A112071 A231609 * A112927 A097406 A064078
KEYWORD
tabf,nonn,less
EXTENSIONS
Corrected and extended by Sean A. Irvine, Apr 13 2021
STATUS
approved