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A208174 Number of nX7 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward neighbors 1
715, 7594479, 84091222866, 931104734002155, 10309684155118737894, 114154269785454920027391, 1263976383376771173195964686, 13995414281804368959953485044237, 154964620775524737157861783733965485 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A208175

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A208863 A208871 A208878 * A200800 A208200 A208407

Adjacent sequences: A208171 A208172 A208173 * A208175 A208176 A208177

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 24 2012

STATUS

approved

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Last modified December 6 21:00 EST 2022. Contains 358648 sequences. (Running on oeis4.)