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Number of binary matrices with n columns and any number of distinct nonzero rows with 4 ones in every column and columns in nonincreasing lexicographic order.
2

%I #5 Jan 25 2020 02:26:44

%S 1,0,0,840,771305,1496866413,5261551562405,29862266595102105,

%T 256001890048602731140,3158251998655622915889925,

%U 53980217006281640348184149417,1239061499733946652592749224572554,37220984154655168600230783138660824904,1431711029036285286788945015739877116840914

%N Number of binary matrices with n columns and any number of distinct nonzero rows with 4 ones in every column and columns in nonincreasing lexicographic order.

%H Andrew Howroyd, <a href="/A331652/b331652.txt">Table of n, a(n) for n = 0..50</a>

%Y Row n=4 of A331571.

%K nonn

%O 0,4

%A _Andrew Howroyd_, Jan 24 2020