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A252497
Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 5
1
12256, 201803, 3610840, 63629981, 1109122552, 19357895296, 338813107319, 5930208264965, 103722180394141, 1814207607697015, 31737667703021925, 555207990598647743, 9712275698429065985, 169898190771094065534
OFFSET
1,1
COMMENTS
Column 1 of A252500
LINKS
EXAMPLE
Some solutions for n=1
..3..1..0....0..1..3....0..2..2....1..0..0....0..1..3....0..1..2....0..2..0
..0..0..0....3..0..1....0..0..0....2..1..1....0..0..1....0..0..1....3..0..0
..0..1..0....0..1..0....1..0..0....0..1..1....0..0..0....1..3..0....0..1..0
CROSSREFS
Sequence in context: A135128 A166000 A252500 * A254548 A254555 A254478
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2014
STATUS
approved