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 A139089 #7 Aug 22 2020 13:39:55
%S A139089 561,4435201,691891201,39520825344001,13516122267648001,
%T A139089 2872446304320552960001,982417999304411328282624000001,
%U A139089 913648739353102535302840320000001
%N A139089 a(n) = prime(n)!/9 + 1.
%t A139089 Table[(Prime[n]! + 9)/9, {n, 4, 30}]
%t A139089 Prime[Range[4,12]]!/9+1 (* _Harvey P. Dale_, Aug 22 2020 *)
%Y A139089 Cf. A082672, A089085, A089130, A117141, A007749, A139056-A139066, A020458, A139068, A137390, A139070-A139075, A136019, A136020, A136026, A136027, A139089-A139092.
%K A139089 nonn
%O A139089 4,1
%A A139089 _Artur Jasinski_, Apr 08 2008