A269899 Number of nX5 0..6 arrays with some element plus some horizontally or vertically adjacent neighbor totalling six exactly once.

6048, 80724000, 579818225700, 3482459146452300, 19179756370570398120, 100348236778061082424740, 507478639206207120857666940, 2505115035390975487284892888500, 12144669340317020203711136372292000

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