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A234230 Number of (n+1)X(3+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 3 (constant stress 1X1 tilings) 1
48592, 635904, 8260920, 108591688, 1418241440, 18729039912, 245685138024, 3261204356760, 42973192245160, 573587040137608, 7594066023919576, 101963002303378792, 1356695275793927016, 18330899102362639544 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A234233

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..135

EXAMPLE

Some solutions for n=1

..7..2..3..1....0..3..4..4....3..4..5..2....2..1..0..1....6..3..5..2

..4..2..6..7....4..4..2..5....0..4..2..2....1..3..5..3....7..7..6..0

CROSSREFS

Sequence in context: A223935 A278020 A237105 * A251597 A228676 A268852

Adjacent sequences:  A234227 A234228 A234229 * A234231 A234232 A234233

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 21 2013

STATUS

approved

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Last modified October 24 10:03 EDT 2021. Contains 348225 sequences. (Running on oeis4.)