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 A252193 Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 7 0
 441, 470, 1647, 21928, 480526, 16789626, 896763106, 73759241737, 9393184984437, 1838801806417542, 553960321837762379, 257519518174289401266, 184540608154581393175482, 203698879433082432079178181 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A252201 LINKS EXAMPLE Some solutions for n=4 ..3..3..3..3..3..2....2..3..3..3..3..2....2..3..3..3..3..2....3..3..2..3..3..3 ..3..3..3..2..3..3....3..3..3..3..3..3....3..3..3..3..3..3....2..3..3..3..2..3 ..2..3..3..3..3..3....3..3..3..3..3..3....3..3..3..3..3..3....3..3..3..3..3..3 ..3..3..3..3..3..3....2..3..3..3..3..3....3..3..3..3..2..3....3..3..3..3..3..3 ..3..3..3..3..3..3....3..3..2..3..3..3....3..3..2..3..3..3....3..3..2..3..3..3 ..3..3..2..3..3..2....3..3..3..3..3..3....3..3..3..3..3..2....2..3..3..3..3..3 CROSSREFS Sequence in context: A187239 A272716 A124170 * A207650 A207045 A252201 Adjacent sequences:  A252190 A252191 A252192 * A252194 A252195 A252196 KEYWORD nonn AUTHOR R. H. Hardin, Dec 15 2014 STATUS approved

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Last modified September 25 20:01 EDT 2021. Contains 347659 sequences. (Running on oeis4.)