# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a053718 Showing 1-1 of 1 %I A053718 #12 Jan 16 2022 15:21:57 %S A053718 1,4,64,4096,423616,128802304,131119611904,431739985985536, %T A053718 2759629471089688576,52225410257290195369984, %U A053718 3239317987292851928169447424,621439868364968017851608618500096 %N A053718 Number of n X n binary matrices of order dividing 4 (also number of solutions to X^4=I in GL(n,2)). %D A053718 V. Jovovic, The cycle index polynomials of some classical groups, Belgrade, 1995, unpublished. %H A053718 Sean A. Irvine, Java program (github) %H A053718 Kent E. Morrison, Integer Sequences and Matrices Over Finite Fields, Journal of Integer Sequences, Vol. 9 (2006), Article 06.2.1. %K A053718 nonn %O A053718 1,2 %A A053718 _Vladeta Jovovic_, Mar 23 2000 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE