A240414 Number of 3Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or zero plus the sum of the elements diagonally to its northwest, modulo 4

11, 33, 202, 846, 3035, 17075, 65790, 283052, 1383887, 5430572, 24942550, 111942189, 462444973, 2123240962, 9194726059, 39505113112, 178049613558, 765870935841, 3356043819951, 14873017976807, 64294462854133

Offset

1,1

Comments

Row 3 of A240412

Links

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

Example

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

Crossrefs

Sequence in context: A179204 A372069 A328606 * A262328 A136199 A226502

Adjacent sequences: A240411 A240412 A240413 * A240415 A240416 A240417

Keyword

nonn

Author

R. H. Hardin, Apr 04 2014

Status

approved