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 A138252 #7 Jan 23 2023 09:04:57 %S A138252 3,6,9,12,15,18,22,25,28,31,34,37,40,44,47,50,53,56,59,62,66,69,72,75, %T A138252 78,81,84,88,91,94,97,100,103,107,110,113,116,119,122,125,129,132,135, %U A138252 138,141,144,147,151,154,157,160,163,166,169,173,176,179,182,185,188 %N A138252 Beatty sequence of the number t satisfying 1/s + 1/t = 1, where s is the positive root of x^3 - x^2 - 1. %C A138252 Complement of A138251. %C A138252 First differs from A110117 at 34th term. %F A138252 a(n)=Floor(t*n). %Y A138252 Cf. A110117, A138252, A138253. %K A138252 nonn %O A138252 1,1 %A A138252 _Clark Kimberling_, Mar 09 2008 %E A138252 Typo in data corrected by _D. S. McNeil_, Aug 17 2010