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 A075148 #5 May 01 2014 02:48:30 %S A075148 0,1,1,1,3,1,4,2,4,2,3,7,3,7,3,11,5,11,5,11,5,8,18,8,18,8,18,8,29,13, %T A075148 29,13,29,13,29,13,21,47,21,47,21,47,21,47,21,76,34,76,34,76,34,76,34, %U A075148 76,34,55,123,55,123,55,123,55,123,55,123,55,199,89,199,89,199,89,199 %N A075148 Table E(n,k) (listed antidiagonalwise as E(0,0), E(1,0), E(0,1), E(2,0), E(1,1), E(0,2), ...) where E(n,k) is F(n+k) for all even n and L(n+k) for all odd n. F(n) and L(n) are the n-th Fibonacci (A000045) and Lucas (A000032) numbers respectively. %F A075148 E(n, k) = (fibonacci(n+k-(n mod 2))+fibonacci(n+k+(n mod 2)))/(2-(n mod 2)) %p A075148 with(combinat); [seq(A075148(A025581(n), A002262(n)),n=0..119)]; A075148 := (n,k) -> (fibonacci(n+k-(n mod 2))+fibonacci(n+k+(n mod 2)))/(2-(n mod 2)); %Y A075148 Used to construct A050609 & A048757. Cf. A025581, A002262. %K A075148 nonn,tabl %O A075148 0,5 %A A075148 _Antti Karttunen_, Sep 05 2002