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 A223546 #20 Jan 04 2023 10:27:43 %S A223546 247,233335657,6703028887,7628001653827,311878265181037, %T A223546 628284422185342477,33217442899375387207,1955977793053588026277, %U A223546 119244359152460559009547,7977565910232727614888637,565918396036931688582304027,3258940366335958863738288181627 %N A223546 Composite numbers in the sequence A217723. %H A223546 Paul Larm, <a href="/A223546/b223546.txt">Table of n, a(n) for n = 1..14</a> %e A223546 a(1) = 247 = 13*19 which is the first composite number in sequence A217723. %Y A223546 Intersection of A002808 and A217723. %K A223546 nonn %O A223546 1,1 %A A223546 _Paul Larm_, Mar 21 2013