A233630 Number of (n+1)X(3+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6

4974, 150054, 4350820, 130732438, 3912088926, 117571581104, 3530630987208, 106103463522318, 3187954907098334, 95800942354485530, 2878719458096776464, 86506426202241796704, 2599495648181112747454, 78115122641805183994432

Offset

1,1

Comments

Column 3 of A233635

Links

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

R. H. Hardin, Empirical recurrence of order 63

Formula

Empirical recurrence of order 63 (see link above)

Example

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

Crossrefs

Sequence in context: A225718 A228302 A116147 * A254696 A203064 A239506

Adjacent sequences: A233627 A233628 A233629 * A233631 A233632 A233633

Keyword

nonn

Author

R. H. Hardin, Dec 14 2013

Status

approved