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 A082952 #8 Dec 11 2023 17:32:25 %S A082952 5,11,7,71,61,11,83,23,71,20639383,811,401,1697,29,67411, %T A082952 14029308060317546154181,12893,12318573951317236818169524329,79,16567, %U A082952 6653,293,229758023927584562777368125832724248866067995638905559798117 %N A082952 Smaller of the two factors of the n-th semiprime number of the form m!+1. %H A082952 Paul Leyland, <a href="http://www.leyland.vispa.com/numth/factorization/main.htm">Tables of factors of N!+1 and N!-1.</a> %H A082952 Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/matha1/matha104.htm">n! + 1 (n = 1 to 100).</a> %F A082952 Numbers p such that p*q=A078778(n)!+1, p, q prime, p<q %e A082952 a(3)=7 because A078778(3)!+1=6!+1=721=7*103 %t A082952 FactorInteger[#][[1,1]]&/@Select[Range[50]!+1,PrimeOmega[#]==2&] (* The program generates the first 17 terms of the sequence. To generate more, increase the Range constant but the program may take a long time to run.*) (* _Harvey P. Dale_, Dec 11 2023 *) %Y A082952 Cf. A046315, A078778, A002981, A080802. %K A082952 nonn %O A082952 1,1 %A A082952 _Hugo Pfoertner_, May 26 2003