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A251879 Number of (n+2)X(2+2) 0..4 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime 1
11492, 16857, 36085, 100787, 242531, 725325, 2472269, 6408131, 19769560, 78452511, 212230688, 666265060, 2912844580, 8061613986, 25541729546, 117108085594, 327465960182, 1041920747781, 4874382846428, 13688187308337 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A251885

LINKS

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

EXAMPLE

Some solutions for n=4

..0..3..4..4....3..1..3..1....3..1..1..1....1..3..3..1....0..0..3..0

..1..1..3..3....0..1..4..0....4..0..3..2....1..4..0..3....2..0..1..4

..4..1..0..4....0..3..0..4....0..4..3..0....1..0..4..1....3..3..1..3

..0..3..4..0....3..1..3..3....3..3..1..1....1..3..3..1....0..4..1..0

..3..1..3..1....0..3..0..0....2..0..3..4....1..4..0..3....4..0..3..2

..4..3..0..4....4..1..2..0....0..2..1..0....1..0..4..3....3..3..1..3

CROSSREFS

Sequence in context: A023071 A100972 A293371 * A201048 A236522 A235659

Adjacent sequences:  A251876 A251877 A251878 * A251880 A251881 A251882

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 10 2014

STATUS

approved

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Last modified April 13 07:51 EDT 2021. Contains 342935 sequences. (Running on oeis4.)