A124681 - OEIS

%I #17 Oct 01 2023 14:44:18

%S 14,29,49,217,757,613,1327,3661,6409,6349,15457,13057,17707,40789,

%T 53137,37993,104581,57757,152797

%N a(n) = number of conjugacy classes in PSL_4(prime(n)).

%o (Magma) A124681 := func< n | NumberOfClasses(PSL(4,NthPrime(n))) >;

%Y Cf. A000702, A006951, A124679, A124678.

%K nonn,more

%O 1,1

%A _N. J. A. Sloane_, Dec 25 2006

%E a(5) and a(6) from _Klaus Brockhaus_, Dec 26 2006 and  Oct 09 2010

%E a(7)..a(14) appended, from running MAGMA for 32 processor hours at U. Newcastle, by _Jason Kimberley_, Feb 09 2011.

%E a(15)-a(19) from _Robin Visser_, Oct 01 2023