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A184599 1/4 the number of (n+1) X 5 binary arrays with equal numbers of 2 X 2 subblocks with sums 1 and 3. 1
58, 1123, 28192, 782948, 22581061, 661355087, 19597196907, 586441134417, 17688240987365, 536871796215114, 16377770252298658, 501706560946729804, 15422847845337959631, 475525543795160585979, 14699379057329857140441 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A184604.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..176

EXAMPLE

Some solutions for 3 X 5:

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

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

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

CROSSREFS

Sequence in context: A157252 A142966 A093258 * A160347 A181280 A017774

Adjacent sequences:  A184596 A184597 A184598 * A184600 A184601 A184602

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 18 2011

STATUS

approved

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Last modified May 12 05:25 EDT 2021. Contains 343811 sequences. (Running on oeis4.)