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A260281 Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001011 1

%I #4 Jul 22 2015 07:45:11

%S 366,1150,5420,18380,65907,264502,984644,3594132,13692107,51665854,

%T 191960166,721121125,2715359102,10162545149,38093817256,143095709741,

%U 536645505853,2012038271487,7550226421387,28325095890229,106233154740268

%N Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 00000001 or 00001011

%C Column 5 of A260284

%H R. H. Hardin, <a href="/A260281/b260281.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = a(n-1) +46*a(n-3) +17*a(n-4) +19*a(n-5) -610*a(n-6) -622*a(n-7) -284*a(n-8) +4212*a(n-9) +5180*a(n-10) +2340*a(n-11) -17624*a(n-12) -21340*a(n-13) -7070*a(n-14) +43074*a(n-15) +46818*a(n-16) +15958*a(n-17) -63936*a(n-18) -61960*a(n-19) -21872*a(n-20) +58810*a(n-21) +49015*a(n-22) +18583*a(n-23) -36041*a(n-24) -22661*a(n-25) -7530*a(n-26) +15022*a(n-27) +6519*a(n-28) +681*a(n-29) -4941*a(n-30) -1301*a(n-31) +242*a(n-32) +1190*a(n-33) +261*a(n-34) -35*a(n-35) -145*a(n-36) -23*a(n-37) +8*a(n-39) for n>44

%e Some solutions for n=4

%e ..0..0..1..0..0..0..0....1..0..0..0..0..1..0....0..0..0..0..0..0..0

%e ..0..0..0..0..0..1..0....0..1..0..0..0..0..0....0..0..0..1..0..0..0

%e ..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0

%e ..0..0..0..0..0..0..0....0..0..0..0..0..0..0....0..0..0..0..0..0..0

%e ..0..1..0..0..0..0..0....0..0..1..0..0..0..0....0..0..1..0..0..0..0

%e ..0..1..0..1..0..0..1....0..0..0..0..0..0..1....0..0..0..0..0..0..0

%Y Cf. A260284

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 22 2015

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Last modified September 11 12:31 EDT 2024. Contains 375829 sequences. (Running on oeis4.)