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A259640 Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000000 or 00000001 1
472, 1964, 11261, 42524, 182654, 899557, 3919925, 16946757, 77735408, 348525973, 1536576910, 6895676466, 30940535849, 137721843827, 615229646787, 2754036127174, 12296912173643, 54916113461292, 245512383603304 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A259642

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +3*a(n-2) +61*a(n-3) +47*a(n-4) -60*a(n-5) -990*a(n-6) -1180*a(n-7) +352*a(n-8) +8249*a(n-9) +7603*a(n-10) -2855*a(n-11) -30388*a(n-12) -20354*a(n-13) +5185*a(n-14) +61744*a(n-15) +24167*a(n-16) -8563*a(n-17) -72780*a(n-18) -8588*a(n-19) +15051*a(n-20) +61538*a(n-21) -6778*a(n-22) -13766*a(n-23) -35716*a(n-24) +1294*a(n-25) +5880*a(n-26) +10338*a(n-27) +1680*a(n-28) -1116*a(n-30) for n>32

EXAMPLE

Some solutions for n=4

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

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

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

..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0

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

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

CROSSREFS

Cf. A259642

Sequence in context: A235287 A260102 A260135 * A187161 A249534 A180838

Adjacent sequences:  A259637 A259638 A259639 * A259641 A259642 A259643

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 02 2015

STATUS

approved

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Last modified May 21 22:24 EDT 2019. Contains 323467 sequences. (Running on oeis4.)