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A230530 Number of nX3 0..6 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 7, and upper left element zero 1
0, 0, 0, 0, 52, 1738, 18106, 197916, 2076832, 21111192, 210584430, 2084545432, 20498628052, 200742823012, 1960821313548, 19120799484034, 186245617331536, 1812799632396874, 17636246250640738, 171524349058534882 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Column 3 of A230533

LINKS

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

R. H. Hardin, Empirical recurrence of order 64

FORMULA

Empirical recurrence of order 64 (see link above)

EXAMPLE

Some solutions for n=7

..0..1..2....0..1..0....0..6..5....0..6..5....0..6..5....0..6..3....0..3..4

..6..4..3....1..2..3....1..2..4....1..1..4....1..0..6....1..5..4....1..2..5

..5..5..6....0..5..4....0..3..2....2..2..3....2..4..5....2..1..3....0..1..6

..4..1..0....6..6..5....6..4..5....3..1..2....3..2..4....3..0..2....6..0..0

..3..2..6....5..0..6....5..5..6....4..3..1....4..5..3....4..5..1....5..6..1

..1..4..5....4..1..5....4..3..0....5..6..0....3..6..2....3..6..0....2..5..2

..2..3..4....3..2..1....1..2..1....4..5..6....2..0..1....4..5..4....3..4..3

CROSSREFS

Sequence in context: A112008 A275102 A004342 * A188389 A169997 A215595

Adjacent sequences:  A230527 A230528 A230529 * A230531 A230532 A230533

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 22 2013

STATUS

approved

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Last modified September 23 22:32 EDT 2020. Contains 337315 sequences. (Running on oeis4.)