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A235184 Number of (n+1)X(6+1) 0..5 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 5, with no adjacent elements equal (constant stress tilted 1X1 tilings) 1
13736, 27080, 52328, 112432, 236376, 540368, 1204056, 2877232, 6679048, 16488928, 39445720, 99822000, 244423864, 630666960, 1573863272, 4125440160, 10464500824, 27797234032, 71547566680, 192285485520, 501651854792, 1362516822208 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A235186

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..187

FORMULA

Empirical: a(n) = 4*a(n-1) +41*a(n-2) -177*a(n-3) -709*a(n-4) +3405*a(n-5) +6658*a(n-6) -37423*a(n-7) -35857*a(n-8) +259792*a(n-9) +100713*a(n-10) -1189883*a(n-11) -44519*a(n-12) +3652705*a(n-13) -650588*a(n-14) -7506845*a(n-15) +2237158*a(n-16) +10206566*a(n-17) -3478912*a(n-18) -9024208*a(n-19) +2879248*a(n-20) +5075680*a(n-21) -1279200*a(n-22) -1728912*a(n-23) +283680*a(n-24) +319968*a(n-25) -24192*a(n-26) -24192*a(n-27)

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A178486 A236708 A205259 * A270639 A031807 A119730

Adjacent sequences:  A235181 A235182 A235183 * A235185 A235186 A235187

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 04 2014

STATUS

approved

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Last modified January 27 04:57 EST 2020. Contains 331291 sequences. (Running on oeis4.)