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URL: https://oeis.org/A251324

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A251324
Number of (n+1) X (6+1) 0..1 arrays with every 2 X 2 subblock having one or two 1's.
1
1740, 34288, 636404, 12770802, 246926340, 4911447738, 96040080726, 1900083059348, 37310824370952, 736337217038262, 14484078395069690, 285531655916253834, 5620706345762154584, 110750007369029752518
OFFSET
1,1
COMMENTS
Column 6 of A251326.
FORMULA
Empirical recurrence of order 71 (see link above).
EXAMPLE
Some solutions for n=2
..1..0..1..0..1..0..1....1..0..0..0..1..0..1....0..1..0..0..0..0..0
..1..0..1..0..1..0..0....0..0..1..0..0..1..0....0..1..0..1..1..1..1
..1..0..0..0..0..1..1....1..1..0..1..1..0..0....0..1..0..0..0..0..0
CROSSREFS
Cf. A251326.
Sequence in context: A259302 A383239 A251802 * A184666 A022061 A107525
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 01 2014
STATUS
approved