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 A350982 #6 Mar 08 2022 13:28:02 %S A350982 0,49,728,10185,141904,1976513,27529320,383434009,5340546848, %T A350982 74384221905,1036038559864,14430155616233,200986140067440, %U A350982 2799375805327969,38990275134524168,543064476078010425,7563912389957621824,105351708983328695153,1467360013376644110360,20437688478289688849929 %N A350982 a(0)=0, a(1)=49, thereafter a(n) = 14*a(n-1)-a(n-2)+42. %C A350982 Arises in studying the equation x^3 - 7*y^2 = 1. %D A350982 P.-F. Teilhet, Query 2228, L'Intermédiaire des Mathématiciens, 11 (1904), 44-45. %Y A350982 Cf. A144929, A350979, A350980, A350981. %K A350982 nonn %O A350982 0,2 %A A350982 _N. J. A. Sloane_, Mar 08 2022