This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A046616 #9 Jul 02 2025 16:01:57 %S A046616 6,11,23,16,39,21,17,12,26,29,86,31,63,231,117,36,546,348,153,41,1176, %T A046616 894,501,194,46,414,279,139,48,51,4422,693,418,187,291,56,7887,1111, %U A046616 605,1226,347,61,16731,13442,1716,4251,1573,408,66,30173,22022,12831 %N A046616 First numerator and then denominator of the elements to the right of the central elements of the 1/5-Pascal triangle (by row), excluding 1's and 5's. %e A046616 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; ... %Y A046616 Cf. A046601. %K A046616 tabf,nonn %O A046616 1,1 %A A046616 _Mohammad K. Azarian_ %E A046616 More terms from _James Sellers_, Dec 16 1999