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A234242 Number of (n+1)X(2+1) 0..7 arrays with every 2X2 subblock having its diagonal sum differing from its antidiagonal sum by 2 (constant stress 1X1 tilings) 1
6706, 99630, 1520024, 23428586, 361889580, 5604275160, 86776363660, 1346057282610, 20871073347970, 324182229853644, 5033011970696922, 78280166521734740, 1216896695697878704, 18952578238483018624 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A234245

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 45

FORMULA

Empirical recurrence of order 45 (see link above)

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A031846 A289516 A239565 * A252602 A224689 A190292

Adjacent sequences:  A234239 A234240 A234241 * A234243 A234244 A234245

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 21 2013

STATUS

approved

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Last modified May 19 06:41 EDT 2019. Contains 323386 sequences. (Running on oeis4.)