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A234687 Number of (n+1)X(5+1) 0..6 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant stress 1X1 tilings) 1
131200, 281612, 603480, 1602224, 4224328, 13220576, 40731576, 144171008, 498365320, 1942449632, 7343739000, 30950526464, 125722585288, 564467755616, 2427720463416, 11459328322688, 51522026849800, 252746043487712 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A234690

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..42

FORMULA

Empirical: a(n) = 8*a(n-1) +136*a(n-2) -1228*a(n-3) -7714*a(n-4) +83412*a(n-5) +227220*a(n-6) -3310020*a(n-7) -3144813*a(n-8) +85322244*a(n-9) -10139052*a(n-10) -1502272464*a(n-11) +1272592288*a(n-12) +18484107136*a(n-13) -25856757520*a(n-14) -159615082880*a(n-15) +298588477264*a(n-16) +954259846848*a(n-17) -2239825910784*a(n-18) -3795391531008*a(n-19) +11239750642176*a(n-20) +9072344881152*a(n-21) -37315540684800*a(n-22) -8727234969600*a(n-23) +78238462464000*a(n-24) -12303747072000*a(n-25) -93182607360000*a(n-26) +40370503680000*a(n-27) +47656304640000*a(n-28) -30098718720000*a(n-29)

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A036095 A214290 A187939 * A170782 A237004 A170791

Adjacent sequences:  A234684 A234685 A234686 * A234688 A234689 A234690

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 29 2013

STATUS

approved

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Last modified October 20 15:23 EDT 2021. Contains 348111 sequences. (Running on oeis4.)