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A204721 Number of (n+1)X7 0..1 arrays with the permanents of 2X2 subblocks nondecreasing rightwards and downwards 1
3490, 115060, 2995945, 75805761, 1793675684, 41246881735, 924334074451, 20403964857427, 445490014489620, 9658996327389732, 208444292278978971, 4484720782054896901, 96300946931574527974, 2065291548346501509907 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A204723

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A031737 A268156 A180994 * A204960 A249525 A252049

Adjacent sequences:  A204718 A204719 A204720 * A204722 A204723 A204724

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 18 2012

STATUS

approved

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Last modified July 28 00:54 EDT 2021. Contains 346316 sequences. (Running on oeis4.)