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 A038647 #8 Mar 16 2020 10:14:06 %S A038647 331,988,14911,31228,37969,84877,102121,318607,1058524,1403593, %T A038647 3760549,4796881,4912657,5717500,5734996,6804124,7188928,9903013, %U A038647 10133125,14040871,16930555,22656877,32878231,35956348,41917948,44653687,46692367,47107222,47222197,53033461 %N A038647 Gaps of 4 in sequence A038593 (lower terms). %H A038647 Giovanni Resta, <a href="/A038647/b038647.txt">Table of n, a(n) for n = 1..100</a> %Y A038647 Cf. A038648. %K A038647 nonn %O A038647 1,1 %A A038647 _Jeff Burch_ %E A038647 Offset changed to 1 by and more terms from _Jinyuan Wang_, Mar 16 2020