A240042 Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4

4, 9, 26, 93, 309, 1043, 3597, 12865, 45491, 163686, 584594, 2103512, 7548847, 27174662, 97768996, 352008043, 1267200666, 4563053012, 16431815183, 59173883901, 213095423135, 767419010967, 2763770574117, 9953309109574

Offset

1,1

Comments

Column 3 of A240046

Links

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

Example

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

Crossrefs

Sequence in context: A145855 A363448 A354604 * A099615 A114618 A067758

Adjacent sequences: A240039 A240040 A240041 * A240043 A240044 A240045

Keyword

nonn

Author

R. H. Hardin, Mar 31 2014

Status

approved