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A184602 1/4 the number of (n+1) X 8 binary arrays with equal numbers of 2 X 2 subblocks with sums 1 and 3. 1
2880, 446426, 89538170, 19597196907, 4461217004146, 1038876920232926, 245608218357699105, 58705095126108291860, 14148602810460027001369, 3432240397744170829576350, 836984055384644047944565034 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A184604.
LINKS
EXAMPLE
Some solutions for 3 X 8:
..0..0..1..1..1..1..0..1....0..0..1..1..0..0..1..0....0..0..0..1..1..0..1..0
..1..0..0..1..0..1..0..1....1..0..0..1..0..1..0..1....0..0..0..0..0..1..1..1
..0..0..0..1..0..0..1..1....1..0..1..1..1..0..1..1....1..1..1..0..0..1..1..1
CROSSREFS
Sequence in context: A260369 A134856 A066407 * A144547 A259403 A241529
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 18 2011
STATUS
approved

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Last modified June 20 18:51 EDT 2024. Contains 373532 sequences. (Running on oeis4.)