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A235732 Number of (n+1)X(4+1) 0..1 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 1
746, 15963, 337412, 7041734, 146785037, 3054397001, 63554803821, 1322113787590, 27503978998503, 572147678579818, 11902082913813364, 247591529985854808, 5150496436912541860, 107142578702763898163, 2228821011220833912388 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A235736

LINKS

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

R. H. Hardin, Empirical recurrence of order 86

FORMULA

Empirical recurrence of order 86 (see link above)

EXAMPLE

Some solutions for n=2

..0..0..0..1..0....0..0..0..1..1....0..0..1..0..0....0..0..0..1..0

..1..1..0..1..1....0..1..0..1..0....1..1..1..0..1....0..1..0..1..1

..0..0..1..1..0....0..0..1..1..0....0..0..0..0..0....0..1..1..0..0

CROSSREFS

Sequence in context: A099819 A344014 A051978 * A235513 A252560 A252453

Adjacent sequences:  A235729 A235730 A235731 * A235733 A235734 A235735

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 15 2014

STATUS

approved

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Last modified December 3 02:14 EST 2021. Contains 349445 sequences. (Running on oeis4.)