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A227102 Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having a sum of two, with rows and columns of the latter in lexicographically nondecreasing order 1
16, 341, 4444, 60039, 754758, 8638999, 89104481, 828893716, 6983821643, 53621106874, 377769331391, 2459320959398, 14894188221320, 84433809668941, 450539327678840, 2274144315956048, 10906260377874097, 49886929929379557 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A227103

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..46

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A318013 A320399 A173906 * A221577 A136269 A010368

Adjacent sequences:  A227099 A227100 A227101 * A227103 A227104 A227105

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 01 2013

STATUS

approved

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Last modified May 28 04:36 EDT 2020. Contains 334671 sequences. (Running on oeis4.)