A198525 Number of nX5 0..4 arrays with values 0..4 introduced in row major order and each element equal to no more than two horizontal and vertical neighbors

52, 81844, 222590953, 634586561196, 1814002928583853, 5186266567454077293, 14827770532074166305565, 42393290191915767856385826, 121204405622972228787863169567, 346529082914494875185400399625818

Offset

1,1

Comments

Column 5 of A198528

Links

R. H. Hardin, Table of n, a(n) for n = 1..64

Example

Some solutions for n=4
..0..0..1..2..3....0..1..2..2..0....0..1..0..2..2....0..1..1..2..3
..1..1..0..1..4....1..1..0..3..1....1..1..0..3..0....1..1..0..1..2
..0..0..1..2..2....0..0..1..0..3....0..0..1..0..2....0..0..1..0..4
..0..0..1..0..3....0..0..1..2..1....0..0..1..3..1....0..0..1..3..3

Crossrefs

Sequence in context: A208785 A206388 A263223 * A208580 A208585 A208464

Adjacent sequences: A198522 A198523 A198524 * A198526 A198527 A198528

Keyword

nonn

Author

R. H. Hardin Oct 26 2011

Status

approved