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 A137149 #26 Feb 17 2023 20:03:09
%S A137149 1,1,6,120,362880,39916800,1307674368000,355687428096000,
%T A137149 51090942171709440000,10888869450418352160768000000,
%U A137149 8841761993739701954543616000000
%N A137149 a(n) = (prime(n)-2)!.
%C A137149 Old definition was "a(n) = prime(n)!/(prime(n)*EulerPhi(prime(n)))".
%C A137149 Degree of Lagrange resolvent of polynomial prime degree. Ratio: degree of symmetric group of prime order n divided by order metacyclic group of prime order n. For degree of Lagrange resolvent of polynomial not prime degree see A137150.
%H A137149 Vincenzo Librandi, <a href="/A137149/b137149.txt">Table of n, a(n) for n = 1..88</a>
%t A137149 Table[(Prime[n]-2)!, {n, 1, 15}] (* _Bruno Berselli_, May 04 2014 *)
%o A137149 (Magma) [Factorial(NthPrime(n)-2): n in [1..15]]; // _Vincenzo Librandi_, May 04 2014
%Y A137149 Cf. A058161, A137150.
%K A137149 nonn
%O A137149 1,3
%A A137149 _Artur Jasinski_, Jan 23 2008
%E A137149 New name from _Vincenzo Librandi_, May 04 2014