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A227059 Number of nX5 -2..2 arrays of 2X2 subblock diagonal sums minus antidiagonal sums for some (n+1)X6 binary array with rows and columns of the latter in lexicographically nondecreasing order 1

%I #4 Jun 30 2013 06:44:19

%S 56,777,11810,183000,2625106,33345171,371484306,3651371505,

%T 32017940207,253426591748,1830279313794,12175210709491,75202293506194,

%U 434279600673275,2358572224659638,12108001563352776,59013152727127909

%N Number of nX5 -2..2 arrays of 2X2 subblock diagonal sums minus antidiagonal sums for some (n+1)X6 binary array with rows and columns of the latter in lexicographically nondecreasing order

%C Column 5 of A227060

%H R. H. Hardin, <a href="/A227059/b227059.txt">Table of n, a(n) for n = 1..19</a>

%e Some solutions for n=3

%e ..0..1..0.-2..1....1..0.-2..0..1....0..0..1..0.-1...-2..1..0..0..0

%e ..0.-2..1..0.-1....0..0..1..0.-1....0..0..0..0..0....1.-2..0..0..1

%e ..0..1.-2..2..0...-2..1.-1..1..0....1..0.-2..1..0....0..1..0..0.-1

%K nonn

%O 1,1

%A _R. H. Hardin_ Jun 30 2013

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Last modified April 23 03:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)