A229520 Number of n X 7 0..2 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1) X 8 0..2 array without adjacent equal elements in the latter.

491, 23507, 680991, 17910863, 476435051, 12425155219, 329002027139, 8615734849077, 227806404072631, 5980357404174043, 157931611506915929, 4151816922039440341, 109543979251248493339, 2882145648661246996031

Offset

1,1

Comments

Column 7 of A229521.

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

Some solutions for n=3:
  0 1 1 1 0 1 1      0 1 0 1 0 1 1      0 1 0 1 1 1 1
  1 0 1 0 1 0 1      1 0 2 0 2 0 1      1 0 1 2 1 1 1
  0 2 0 1 0 1 0      0 1 0 1 0 1 1      1 1 2 0 2 1 0

Crossrefs

Cf. A229521.

Sequence in context: A217118 A205200 A205058 * A226715 A205819 A234672

Adjacent sequences: A229517 A229518 A229519 * A229521 A229522 A229523

Keyword

nonn

Author

R. H. Hardin, Sep 25 2013

Status

approved