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A222557 Number of (n+3)X1 arrays of occupancy after each element moves up to +-n places but not 0.

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%I A222557 #5 Jun 02 2025 08:27:51
%S A222557 4,64,359,1562,6220,24024,92011,352258,1351519
%N A222557 Number of (n+3)X1 arrays of occupancy after each element moves up to +-n places but not 0.
%C A222557 Row 3 of A222555
%e A222557 Some solutions for n=3
%e A222557 ..2....0....1....0....0....2....0....2....0....3....2....0....0....2....1....0
%e A222557 ..1....1....0....0....2....1....3....0....0....0....0....2....0....1....2....0
%e A222557 ..1....3....1....2....0....1....0....0....3....2....2....1....4....0....1....2
%e A222557 ..0....1....2....1....0....0....1....1....0....0....1....1....2....2....0....0
%e A222557 ..1....1....1....0....2....0....1....1....0....1....1....1....0....1....1....2
%e A222557 ..1....0....1....3....2....2....1....2....3....0....0....1....0....0....1....2
%K A222557 nonn
%O A222557 1,1
%A A222557 _R. H. Hardin_ Feb 24 2013

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