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A259247 Number of (n+1)X(5+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0011 or 0111 1
255, 1733, 10720, 71313, 451481, 2964676, 18970267, 123694345, 795726064, 5169185873, 33344636925, 216190905756, 1396553927379, 9045384191389, 58474650871712, 378535391931953, 2448013308032361, 15842822807262836 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A259250

LINKS

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

FORMULA

Empirical: a(n) = 6*a(n-1) +49*a(n-2) -268*a(n-3) -920*a(n-4) +4050*a(n-5) +9218*a(n-6) -25662*a(n-7) -49822*a(n-8) +62672*a(n-9) +120020*a(n-10) -35270*a(n-11) -81969*a(n-12) +4820*a(n-13) +15497*a(n-14) -596*a(n-15) -536*a(n-16) +24*a(n-17)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Cf. A259250

Sequence in context: A236783 A237061 A236792 * A204738 A206048 A160908

Adjacent sequences:  A259244 A259245 A259246 * A259248 A259249 A259250

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 22 2015

STATUS

approved

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Last modified January 20 20:50 EST 2021. Contains 340332 sequences. (Running on oeis4.)