A240043 Number of nX4 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

6, 20, 72, 346, 1496, 8567, 46381, 268672, 1556758, 9438166, 56174788, 346760638, 2098659043, 13032771483, 79558734990, 494814764391, 3034462087200, 18868201942704, 116012171614159, 720835003158134, 4439604572498702

Offset

1,1

Comments

Column 4 of A240046

Links

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

Example

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

Crossrefs

Sequence in context: A153372 A028402 A092760 * A058494 A147979 A330245

Adjacent sequences: A240040 A240041 A240042 * A240044 A240045 A240046

Keyword

nonn

Author

R. H. Hardin, Mar 31 2014

Status

approved