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 A051124 #10 Mar 06 2020 03:34:00 %S A051124 1,0,3,1,6,13,5,24,55,21,110,201,121,400,795,441,1510,3109,6733,2616, %T A051124 12463,28653,10974,56017,102449,65312,206195,402993,197062,748189, %U A051124 1587445,3520472,1374951,6472453,14403630,7282041,26431433 %N A051124 a(n) = Fibonacci(n) XOR Fibonacci(n+1). %e A051124 Fibonacci(6) = 8 = 1000_2, Fibonacci(7) = 13 = 1101_2, logical "XOR" is 0101_2 = 5, so a(6)=5. %o A051124 (PARI) a(n) = bitxor(fibonacci(n), fibonacci(n+1)); \\ _Michel Marcus_, Mar 06 2020 %Y A051124 A051122 + A051124 = A051123. %K A051124 nonn,easy,base %O A051124 0,3 %A A051124 _N. J. A. Sloane_ %E A051124 More terms from Robert Lozyniak (11(AT)onna.com)