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A259639 Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 or 00000001 1

%I

%S 236,813,3849,12348,44500,182654,670088,2436036,9361060,35240824,

%T 130549550,491638762,1851623400,6921303290,25956767494,97538420980,

%U 365652086782,1370955967484,5145436930220,19301728914022,72388123438246

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

%C Column 5 of A259642

%H R. H. Hardin, <a href="/A259639/b259639.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = a(n-1) +2*a(n-2) +33*a(n-3) +20*a(n-4) -18*a(n-5) -257*a(n-6) -260*a(n-7) -44*a(n-8) +912*a(n-9) +798*a(n-10) +241*a(n-11) -1094*a(n-12) -868*a(n-13) -450*a(n-14) +667*a(n-15) +251*a(n-16) +158*a(n-17) -247*a(n-18) -19*a(n-19) +25*a(n-20) +81*a(n-21) +7*a(n-22) -8*a(n-24) for n>25

%e Some solutions for n=4

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

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

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

%Y Cf. A259642

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 02 2015

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Last modified October 19 15:34 EDT 2021. Contains 348091 sequences. (Running on oeis4.)