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 A140285 #8 Nov 24 2021 11:32:48 %S A140285 1,15,10671 %N A140285 Numbers which are both lucky (A000959) and tetranacci (A000078). %C A140285 Lucky (A000959) and Fibonacci (A000045) = A057589; lucky and tribonacci (A000073) = A130594. No more through 10^6. %C A140285 a(4) > 4*10^9, if it exists. - _Giovanni Resta_, May 10 2020 %C A140285 a(4) >= 10312882481, if it exists. - _Kevin P. Thompson_, Nov 24 2021 %e A140285 a(3) = 10671 = A000078(18) = A000959(1187). %Y A140285 Cf. A000045, A000073, A000078, A000959, A057589, A130594. %K A140285 bref,more,nonn %O A140285 1,2 %A A140285 _Jonathan Vos Post_, May 24 2008