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A229316

Number of nX3 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X4 0..3 array without adjacent equal elements in the latter.

50, 1494, 34022, 717882, 14972226, 310664552, 6441333794, 133479301256, 2765778769420, 57304490833172, 1187283470159260, 24598916041468848, 509655373324270570, 10559338935801406840, 218774498705110449478

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 3 of A229320

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..122

EXAMPLE

Some solutions for n=3

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

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

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