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A297983 Number of nX5 0..1 arrays with every element equal to 0, 2, 3 or 6 king-move adjacent elements, with upper left element zero. 1
1, 24, 7, 23, 34, 61, 105, 222, 428, 948, 1975, 4162, 8801, 18972, 40777, 87274, 186628, 400752, 861195, 1848299, 3966219, 8516004, 18291312, 39275134, 84334723, 181112426, 388976228, 835341271, 1793949896, 3852795878, 8274644467 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 5 of A297986.

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +a(n-2) -a(n-3) +6*a(n-4) -9*a(n-5) -15*a(n-6) +2*a(n-7) -9*a(n-8) +6*a(n-9) +34*a(n-10) +45*a(n-11) +6*a(n-12) -21*a(n-13) -39*a(n-14) +2*a(n-15) -8*a(n-16) -38*a(n-17) -7*a(n-18) +26*a(n-19) -24*a(n-20) -48*a(n-21) +28*a(n-22) +23*a(n-23) -37*a(n-24) -4*a(n-25) +88*a(n-26) +34*a(n-27) -14*a(n-28) +7*a(n-29) +24*a(n-30) -2*a(n-31) -23*a(n-32) -6*a(n-33) -4*a(n-34) -3*a(n-35) -2*a(n-36) -2*a(n-37) for n>43

EXAMPLE

Some solutions for n=7

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

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

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

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

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

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

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

CROSSREFS

Cf. A297986.

Sequence in context: A339007 A339008 A068613 * A298632 A241362 A033823

Adjacent sequences:  A297980 A297981 A297982 * A297984 A297985 A297986

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 10 2018

STATUS

approved

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Last modified September 17 21:46 EDT 2021. Contains 347489 sequences. (Running on oeis4.)