A205930 Number of (n+1)X4 0..3 arrays with the number of clockwise edge increases in 2X2 subblocks nondecreasing rightwards and downwards

32208, 2554260, 164649752, 9355289120, 490921163308, 24368030395844, 1161408617136336, 53673997085581436, 2421739362640771720, 107206715246675715876, 4673560524189894431892, 201199196153780817200392

Offset

1,1

Comments

Column 3 of A205935

Links

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

Example

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

Crossrefs

Sequence in context: A250897 A366512 A146896 * A269930 A137837 A115501

Adjacent sequences: A205927 A205928 A205929 * A205931 A205932 A205933

Keyword

nonn

Author

R. H. Hardin Feb 01 2012

Status

approved