A252556 Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 4 6 or 7

7755, 21797, 88899, 386004, 2464176, 11035929, 52263770, 332967343, 1520737989, 7411561448, 47936540751, 220824503814, 1087586476536, 7108492126324, 32873323969855, 162589865415002, 1068568255047088, 4950226958536936

Offset

1,1

Comments

Column 6 of A252558

Links

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

Example

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

Crossrefs

Sequence in context: A115440 A321037 A031646 * A028538 A354976 A123990

Adjacent sequences: A252553 A252554 A252555 * A252557 A252558 A252559

Keyword

nonn

Author

R. H. Hardin, Dec 18 2014

Status

approved