A240761 Number of 2Xn 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4

2, 6, 9, 42, 124, 474, 1440, 5239, 16730, 58945, 192711, 666682, 2209028, 7562090, 25254050, 85922148, 288250557, 977287148, 3287088851, 11122488393, 37465304475, 126628657804, 426895509278, 1441942470916, 4863435928395

Offset

1,1

Comments

Row 2 of A240760

Links

R. H. Hardin, Table of n, a(n) for n = 1..84

Example

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

Crossrefs

Sequence in context: A082459 A129831 A101713 * A342317 A117541 A244060

Adjacent sequences: A240758 A240759 A240760 * A240762 A240763 A240764

Keyword

nonn

Author

R. H. Hardin, Apr 12 2014

Status

approved