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A269899 Number of nX5 0..6 arrays with some element plus some horizontally or vertically adjacent neighbor totalling six exactly once. 1
6048, 80724000, 579818225700, 3482459146452300, 19179756370570398120, 100348236778061082424740, 507478639206207120857666940, 2505115035390975487284892888500, 12144669340317020203711136372292000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A269902.

LINKS

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

FORMULA

Empirical: a(n) = 9452*a(n-1) -26328448*a(n-2) +19489229084*a(n-3) -6937844326870*a(n-4) +1407524329278380*a(n-5) -171160654774639168*a(n-6) +12102874519574098532*a(n-7) -408018426397703785081*a(n-8) -1524486446502151977000*a(n-9) +500836341325711582330992*a(n-10) -7394322056828030567685648*a(n-11) -151730438530718185632431424*a(n-12) +1752692657839648297703827200*a(n-13) -4356966782062984619480040000*a(n-14) for n>15

EXAMPLE

Some solutions for n=1

..2..5..3..0..6. .6..1..5..2..1. .5..5..4..0..6. .4..3..3..6..6

CROSSREFS

Cf. A269902.

Sequence in context: A175160 A184195 A269935 * A157267 A283932 A209552

Adjacent sequences:  A269896 A269897 A269898 * A269900 A269901 A269902

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 07 2016

STATUS

approved

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Last modified January 28 22:40 EST 2020. Contains 331328 sequences. (Running on oeis4.)