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 A102195 #16 Mar 02 2025 19:21:04
%S A102195 4,779,1138,57415,77633,55486847,1073911003,3317721397,
%T A102195 1060433508262511,71024113009688593314067,11974445409544006175987023,
%U A102195 1076202964567631961558639609002933,33696092853645518103687453241761538,4617443279524324394317910914689160360213
%N A102195 Iccanobirt semiprimes (5 of 15): Semiprime numbers in A102115.
%H A102195 Harvey P. Dale, <a href="/A102195/b102195.txt">Table of n, a(n) for n = 1..19</a>
%F A102195 a(n) = A102115(A102175(n)).
%t A102195 nxt[{a_,b_,c_}]:={b,c,Total[FromDigits/@Reverse/@IntegerDigits[{a,c}]]+b};Select[NestList[nxt,{0,0,1},120][[;;,1]],PrimeOmega[#]==2&] (* _Harvey P. Dale_, Mar 02 2025 *)
%Y A102195 Cf. A001358, A102115, A102191-A102205.
%K A102195 nonn,less,base
%O A102195 1,1
%A A102195 _Jonathan Vos Post_ and _Ray Chandler_, Dec 31 2004
%E A102195 Offset changed to 1 and a(14) from _Jinyuan Wang_, Aug 12 2021