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A302519 Number of 6Xn 0..1 arrays with every element equal to 0, 1, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
32, 14, 21, 89, 184, 458, 1784, 7182, 22544, 67096, 220654, 775150, 2587038, 8302004, 27025136, 90376752, 301153260, 989265746, 3244058002, 10719499408, 35505656166, 117195031890, 386021758650, 1273341893876, 4206241844100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A302515.

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +2*a(n-2) +3*a(n-3) +46*a(n-4) +32*a(n-5) -18*a(n-6) -33*a(n-7) -230*a(n-8) -144*a(n-9) +146*a(n-10) +151*a(n-11) +360*a(n-12) +319*a(n-13) -195*a(n-14) -371*a(n-15) -150*a(n-16) -170*a(n-17) +50*a(n-18) +96*a(n-19) -45*a(n-20) +87*a(n-21) -3*a(n-22) -9*a(n-23) for n>29

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Cf. A302515.

Sequence in context: A162884 A029771 A302684 * A281720 A303318 A097614

Adjacent sequences:  A302516 A302517 A302518 * A302520 A302521 A302522

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 09 2018

STATUS

approved

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Last modified September 25 15:27 EDT 2021. Contains 347658 sequences. (Running on oeis4.)