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 A138545 #10 Aug 19 2018 07:35:54 %S A138545 1,0,3,1,27,26,385,708,7231,20296,164277,608565,4286161,19021302, %T A138545 123867107,617758729,3862576095,20774382552,127548675709,720773229015, %U A138545 4401180707397,25709943020830,157204921750191,939751281408962 %N A138545 Central moment sequence of tr(A^4) in USp(6). %C A138545 If A is a random matrix in the compact group USp(6) (6x6 complex matrices which are unitary and symplectic), then a(n)=E[(tr(A^4+1))^n] is the n-th central moment of the trace of A^4, since E[tr(A^4)] = -1 (see A138544). %H A138545 Kiran S. Kedlaya and Andrew V. Sutherland, <a href="http://arXiv.org/abs/0803.4462">Hyperelliptic curves, L-polynomials and random matrices</a>, arXiv:0803.4462 [math.NT], 2008-2010. %F A138545 mgf is A(z)=e^zF(z) where F(z) is the mgf of A138544. %e A138545 a(5) = 26 because E[(tr(A^4)+1)^5] = 26 for a random matrix A in USp(6). %Y A138545 Cf. A138544. %K A138545 nonn %O A138545 0,3 %A A138545 _Andrew V. Sutherland_, Mar 24 2008