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A234678 Number of (n+1)X(5+1) 0..5 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 5 (constant stress 1X1 tilings) 1
14368, 25292, 43240, 93680, 191128, 476648, 1109272, 3039128, 7775608, 22805432, 62414680, 192810680, 553489528, 1779951608, 5286609112, 17539418168, 53391783928, 181456023032, 562412044120, 1947069844280, 6115700862328 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A234681

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..163

FORMULA

Empirical: a(n) = 4*a(n-1) +47*a(n-2) -200*a(n-3) -901*a(n-4) +4204*a(n-5) +8957*a(n-6) -48440*a(n-7) -47194*a(n-8) +334096*a(n-9) +101948*a(n-10) -1410080*a(n-11) +170136*a(n-12) +3549696*a(n-13) -1446912*a(n-14) -4861440*a(n-15) +2954880*a(n-16) +2764800*a(n-17) -2073600*a(n-18)

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

CROSSREFS

Sequence in context: A049442 A228468 A296813 * A237788 A106725 A253266

Adjacent sequences:  A234675 A234676 A234677 * A234679 A234680 A234681

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 29 2013

STATUS

approved

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Last modified October 25 19:28 EDT 2020. Contains 338012 sequences. (Running on oeis4.)