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A224804 Number of (n+2)X4 0..3 matrices with each 3X3 subblock having the same population 1
1048576, 2867200, 8151040, 25056256, 100235776, 417335296, 1816453120, 9114142720, 46167923200, 236010496000, 1298135718400, 7150045665280, 39434706558976, 226326503372800, 1299176162060800, 7458911618492416 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A224806

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..21

EXAMPLE

Some solutions for n=2

..0..0..0..0....0..0..2..0....0..0..0..0....0..0..2..2....0..0..2..0

..2..0..3..2....0..2..2..1....2..2..1..2....1..2..0..0....3..2..2..3

..1..3..0..1....1..2..2..0....0..0..2..0....2..2..3..1....1..2..0..1

..0..0..0..0....0..0..2..0....0..0..0..0....0..2..0..2....0..0..2..0

CROSSREFS

Sequence in context: A223603 A223696 A069281 * A016786 A016810 A016906

Adjacent sequences:  A224801 A224802 A224803 * A224805 A224806 A224807

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 18 2013

STATUS

approved

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Last modified January 29 05:09 EST 2022. Contains 350672 sequences. (Running on oeis4.)