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 A347685 #8 Sep 20 2021 09:01:00 %S A347685 1,3,6,19,34,114,204,376,609,2253,3573,12514,21160,34839,54311,209489, %T A347685 327884,1157266,1900261,3060772,4760209,18553192,28734204,46515286, %U A347685 70750097,106748769,155242841 %N A347685 First differences of A345882. %Y A347685 Cf. A345882. %K A347685 nonn,more %O A347685 1,2 %A A347685 _N. J. A. Sloane_, Sep 18 2021 %E A347685 a(25)-a(27) from _Chai Wah Wu_, Sep 19 2021