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 A089764 #14 Apr 16 2025 05:31:28
%S A089764 11,61,241,1201,258520167388849766400001,
%T A089764 2631308369336935301672180121600000001,
%U A089764 203978820811974433586402817399028973568000000001,5075802138772247988008568121766252272260045289880360030994059394809856000000000000001
%N A089764 Primes of the form k! followed by a 1.
%C A089764 The next term has 739 digits. - _Harvey P. Dale_, Jun 08 2014
%e A089764 1201 is a prime obtained as 5! followed by a 1.
%t A089764 Select[Table[FromDigits[Join[IntegerDigits[n!],{1}]],{n,50}],PrimeQ] (* _Harvey P. Dale_, Jun 08 2014 *)
%Y A089764 Cf. A089765, A126896.
%K A089764 base,nonn
%O A089764 1,1
%A A089764 _Amarnath Murthy_, Nov 23 2003
%E A089764 More terms from _Lior Manor_, May 10 2004
%E A089764 One additional term from _Harvey P. Dale_, Jun 08 2014