A046628 Distinct odd numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/5-Pascal triangle (by row).
1, 5, 11, 23, 39, 21, 17, 29, 31, 63, 231, 117, 153, 41, 501, 279, 139, 51, 693, 187, 291, 7887, 1111, 605, 347, 61, 16731, 4251, 1573, 30173, 12831, 1981, 71, 12727, 10439, 34853, 3731, 1561, 491, 109, 621, 81, 3621, 16881, 4323, 91, 66861, 5111, 879
Offset: 1
Examples
1/1; 1/1 1/1; 1/1 1/5 1/1; 1/1 6/5 6/5 1/1; 1/1 11/5 12/5 11/5 1/1; 1/1 16/5 23/5 23/5 16/5 1/1; 1/1 21/5 39/5 46/5 39/5 21/5 1/1; 1/1 26/5 12/1 17/1 17/1 12/1 26/5 1/1; ...
Crossrefs
Cf. A046601.
Extensions
More terms from James Sellers, Dec 16 1999