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A261110 Number of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101 1
183, 402, 1408, 3908, 13040, 35934, 121313, 333722, 1122579, 3092874, 10415091, 28671638, 96526178, 265814264, 894920841, 2464173816, 8296223239, 22844373272, 76910486512, 211778585434, 713000156702, 1963298223048, 6609877528867 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A261113

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-2) +35*a(n-4) +47*a(n-6) -39*a(n-8) -15*a(n-10) -71*a(n-12) +169*a(n-14) -113*a(n-16) +39*a(n-18) -10*a(n-20) +a(n-22) +a(n-24) for n>25

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A261113

Sequence in context: A030465 A147270 A147124 * A260172 A252070 A193253

Adjacent sequences:  A261107 A261108 A261109 * A261111 A261112 A261113

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 08 2015

STATUS

approved

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Last modified May 19 07:05 EDT 2019. Contains 323386 sequences. (Running on oeis4.)