A269094 Number of nX5 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three exactly once.

432, 103488, 15024096, 1856325000, 211625837280, 22984646281176, 2416707037884480, 248267055360211392, 25062609875880382656, 2495854741014485439624, 245851383088389214772304

Offset

1,1

Comments

Column 5 of A269097.

Links

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

Formula

Empirical: a(n) = 236*a(n-1) -19546*a(n-2) +707906*a(n-3) -13261621*a(n-4) +137719076*a(n-5) -784626841*a(n-6) +2025590366*a(n-7) +1091882414*a(n-8) -18874661724*a(n-9) +33829878231*a(n-10) +10605114324*a(n-11) -91783964484*a(n-12) +94503314304*a(n-13) -30762353664*a(n-14) for n>15

Example

Some solutions for n=2
..3..3..2..2..2. .0..1..0..2..2. .0..0..1..3..2. .2..2..0..1..3
..1..3..0..2..2. .1..1..3..2..0. .1..3..3..1..3. .3..2..1..1..3

Crossrefs

Cf. A269097.

Sequence in context: A269149 A113921 A269211 * A269273 A300053 A047804

Adjacent sequences: A269091 A269092 A269093 * A269095 A269096 A269097

Keyword

nonn

Author

R. H. Hardin, Feb 19 2016

Status

approved