A222744 Number of nX5 0..3 arrays with exactly floor(nX5/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order

20, 7546, 6363724, 5989744766, 4906560167364, 4777709698876890, 4001484076145095954, 4007703500495273447052, 3396887706615718195456805, 3458279283218841589487839312, 2953874525277026876992243827814

Offset

1,1

Comments

Column 5 of A222747

Links

R. H. Hardin, Table of n, a(n) for n = 1..51

Example

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

Crossrefs

Sequence in context: A135292 A222721 A223051 * A234459 A013725 A307914

Adjacent sequences: A222741 A222742 A222743 * A222745 A222746 A222747

Keyword

nonn

Author

R. H. Hardin Mar 04 2013

Status

approved