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 A331458 #7 May 30 2020 14:30:19 %S A331458 1,26,142,475,1202,2545,4795,8283,13407,20608,30362,43237,59839,80792, %T A331458 106818,138723,177369,223443,277897,341823,416151,502060,600640, %U A331458 713133,840820,984678,1146392,1327180,1528184,1751517,1998603,2271197,2570453,2898126,3256414 %N A331458 a(n) = A331456(n)/4. %H A331458 Lars Blomberg, <a href="/A331458/b331458.txt">Table of n, a(n) for n = 0..48</a> %Y A331458 Cf. A331456. %K A331458 nonn %O A331458 0,2 %A A331458 _N. J. A. Sloane_, Jan 30 2020 %E A331458 a(6) and beyond from _Lars Blomberg_, May 30 2020