A233847 Number of (2+2)X(n+2) 0..3 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards

11305216, 1909001345, 326595297792, 55891166269184, 9555756198221376, 1634079144681671617, 279374998997273713072, 47766066271725605430992, 8166548560135780862389268, 1396240162443409942341921900

Offset

1,1

Comments

Row 2 of A233845

Links

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

Example

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

Crossrefs

Sequence in context: A253763 A331359 A186090 * A069341 A204790 A183826

Adjacent sequences: A233844 A233845 A233846 * A233848 A233849 A233850

Keyword

nonn

Author

R. H. Hardin, Dec 16 2013

Status

approved