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A295844
Number of nX5 0..1 arrays with each 1 adjacent to 1 or 2 king-move neighboring 1s.
1
12, 261, 2197, 26544, 333366, 3804661, 45214991, 538013975, 6343699611, 75116234061, 889359542764, 10520942085903, 124514937309050, 1473580659681018, 17437858397776247, 206362921178436157
OFFSET
1,1
COMMENTS
Column 5 of A295847.
LINKS
FORMULA
Empirical: a(n) = 11*a(n-1) -5*a(n-2) +300*a(n-3) -1643*a(n-4) +3417*a(n-5) -18172*a(n-6) +29603*a(n-7) -51257*a(n-8) +272523*a(n-9) -231977*a(n-10) +788764*a(n-11) -1381225*a(n-12) -732835*a(n-13) -1386114*a(n-14) -242317*a(n-15) +6665186*a(n-16) -996047*a(n-17) -5648781*a(n-18) -1391422*a(n-19) +3035557*a(n-20) -1545121*a(n-21) +7440631*a(n-22) +821652*a(n-23) -9685076*a(n-24) +1807195*a(n-25) +1576716*a(n-26) -1619373*a(n-27) +2387619*a(n-28) -243797*a(n-29) -34093*a(n-30) +253787*a(n-31) -60395*a(n-32) +22182*a(n-33) +4856*a(n-34) -600*a(n-35)
EXAMPLE
Some solutions for n=4
..1..1..0..0..0. .1..0..1..0..1. .0..0..1..0..0. .1..0..1..1..0
..0..0..0..1..1. .1..0..1..0..1. .0..0..0..1..0. .1..0..0..0..0
..0..1..0..0..0. .1..0..0..0..0. .1..0..0..0..0. .0..1..0..1..1
..1..0..1..1..0. .0..1..1..0..0. .0..1..1..1..1. .1..0..0..1..0
CROSSREFS
Cf. A295847.
Sequence in context: A297717 A352971 A138451 * A113672 A259269 A035265
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 29 2017
STATUS
approved