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 A060716 #12 Jul 02 2025 16:02:01
%S A060716 1,76,80704,1333866496,350423140532224,1470575268235571101696,
%T A060716 98701955014599602193609785344,
%U A060716 105983992373769699116787162453121171456,1820806479557691387021584007269972378727328251904
%N A060716 Singular n X n matrices over GF(4).
%H A060716 Harry J. Smith, <a href="/A060716/b060716.txt">Table of n, a(n) for n = 1..40</a>
%F A060716 For n >= 1, a(n) = 4^(n^2) - A053291(n) = 4^(n^2) - (4^n - 1)*(4^n - 4)*...*(4^n - 4^(n-1)).
%p A060716 for n from 1 to 15 do printf(`%d,`, 4^(n^2) - product(4^n-4^j, j=0..n-1)) od:
%o A060716 (PARI) a(n)={4^(n^2) - prod(j=0, n - 1, 4^n - 4^j)} \\ _Harry J. Smith_, Jul 10 2009
%Y A060716 Cf. A053291.
%K A060716 nonn
%O A060716 1,2
%A A060716 Avi Peretz (njk(AT)netvision.net.il), Apr 21 2001
%E A060716 More terms from _James Sellers_, Apr 24 2001