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A260924 Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010101 00101011 or 01010101 1
297, 468, 1800, 4522, 11608, 27582, 82766, 191474, 543551, 1291912, 3724868, 8715812, 25061915, 59060378, 169750208, 398939434, 1147482231, 2699112784, 7759824787, 18248954340, 52477167246, 123413127854, 354855957210 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A260927

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = a(n-1) +31*a(n-4) -31*a(n-5) +97*a(n-6) -97*a(n-7) +39*a(n-8) -39*a(n-9) -144*a(n-10) +144*a(n-11) -29*a(n-12) +29*a(n-13) +189*a(n-14) -189*a(n-15) -125*a(n-16) +125*a(n-17) -14*a(n-18) +14*a(n-19) +40*a(n-20) -40*a(n-21) -13*a(n-22) +13*a(n-23) -a(n-24) +a(n-25) +a(n-26) -a(n-27) for n>28

EXAMPLE

Some solutions for n=4

..0..0..1..0..0..0..1....1..0..0..0..1..0..1....1..0..1..0..1..1..0

..0..0..0..1..0..1..0....0..1..0..1..0..1..0....0..1..0..1..0..0..0

..1..0..1..0..1..0..1....1..0..1..0..1..0..1....1..0..1..0..1..0..1

..0..1..0..1..0..1..0....0..1..0..1..0..1..0....0..0..0..1..0..1..0

..0..0..1..0..1..0..1....1..0..1..0..1..0..0....1..0..1..0..1..0..1

..1..1..0..1..0..1..0....0..1..0..0..0..1..0....0..1..0..1..0..0..0

CROSSREFS

Cf. A260927

Sequence in context: A252964 A224601 A134260 * A053394 A179158 A037043

Adjacent sequences:  A260921 A260922 A260923 * A260925 A260926 A260927

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 04 2015

STATUS

approved

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Last modified May 28 16:37 EDT 2022. Contains 354119 sequences. (Running on oeis4.)