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A235738 Number of (n+1)X(2+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 1
576, 9710, 160075, 2423417, 36199157, 523547651, 7519969703, 106697433668, 1509299904955, 21253277135453, 298927623301734, 4197620035630914, 58919872257393788, 826569038954130084, 11594164564872458891 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A235742

LINKS

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

R. H. Hardin, Empirical recurrence of order 78

FORMULA

Empirical recurrence of order 78 (see link above)

EXAMPLE

Some solutions for n=3

..2..0..2....1..1..0....0..1..0....1..1..2....1..0..2....0..0..1....2..0..1

..1..1..0....0..2..0....2..0..2....2..0..2....2..1..2....0..2..1....1..2..0

..2..0..2....1..0..1....0..1..1....0..0..0....0..1..0....1..2..0....0..0..2

..0..1..1....2..2..1....0..0..1....2..2..0....1..1..1....2..0..0....2..0..1

CROSSREFS

Sequence in context: A036514 A269034 A188787 * A236078 A264524 A209781

Adjacent sequences:  A235735 A235736 A235737 * A235739 A235740 A235741

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 15 2014

STATUS

approved

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Last modified July 4 16:24 EDT 2020. Contains 335448 sequences. (Running on oeis4.)