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 A051123 #10 Mar 06 2020 03:33:53 %S A051123 1,1,3,3,7,13,13,29,55,55,127,217,249,505,891,1019,2047,3645,6749, %T A051123 6781,15087,28655,28671,65521,111921,130865,262003,458611,514551, %U A051123 1047229,1882877,3522525,3538919,7849959,14666991,15719929,32759801 %N A051123 a(n) = Fibonacci(n) OR Fibonacci(n+1). %e A051123 Fibonacci(6) = 8 = 1000_2, Fibonacci(7) = 13 = 1101_2, logical "OR" is 1101_2 = 13, so a(6)=13. %o A051123 (PARI) a(n) = bitor(fibonacci(n), fibonacci(n+1)); \\ _Michel Marcus_, Mar 06 2020 %Y A051123 A051122 + A051124 = A051123. %K A051123 nonn,easy,base %O A051123 0,3 %A A051123 _N. J. A. Sloane_ %E A051123 More terms from Robert Lozyniak (11(AT)onna.com)