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 A076781 #23 Sep 08 2022 08:45:07 %S A076781 1,6,1296,10077696,2821109907456,28430288029929701376, %T A076781 10314424798490535546171949056, %U A076781 134713546244127343440523266742756048896,63340286662973277706162286946811886609896461828096 %N A076781 a(n) = 6^(n^2). %C A076781 Number of n X n matrices over an alphabet of size 6. %C A076781 a(n) = k^(n^2) with k = 2, 3, 4, ... counts n X n matrices over Z/kZ. %H A076781 Vincenzo Librandi, <a href="/A076781/b076781.txt">Table of n, a(n) for n = 0..30</a> %t A076781 6^Range[0,12]^2 (* _Vladimir Joseph Stephan Orlovsky_, Feb 01 2012 *) %o A076781 (Magma) [ 6^(n^2): n in [0..10]]; // _Vincenzo Librandi_, May 30 2011 %Y A076781 Cf. A060757, A060758, A060759, A060760, A060761. %K A076781 nonn %O A076781 0,2 %A A076781 Vincenzo Origlio (vincenzo.origlio(AT)itc.cnr.it), Nov 15 2002 %E A076781 More terms from _Philippe Deléham_, Nov 24 2007 %E A076781 a(5) corrected by _Vincenzo Librandi_, May 30 2011