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A250323
Number of length 4+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero
0
24, 161, 652, 1773, 3916, 7969, 14452, 24293, 38720, 59201, 86768, 123737, 170864, 231061, 307156, 400573, 512768, 650369, 812560, 1003945, 1228880, 1491229, 1791156, 2138429, 2532856, 2981513, 3489820, 4060069, 4693008
OFFSET
1,1
COMMENTS
Row 4 of A250320
EXAMPLE
Some solutions for n=6
..2....2....2....1....1....4....1....2....4....2....0....3....3....1....2....2
..0....3....2....3....4....4....2....0....3....5....1....0....4....4....0....4
..1....4....6....4....4....1....2....3....4....6....1....1....4....3....0....5
..3....0....6....4....5....5....0....1....4....4....4....6....5....1....3....3
..2....1....4....3....3....0....0....2....2....3....4....6....1....3....3....2
..2....2....0....1....0....6....1....0....3....0....5....1....2....4....1....4
CROSSREFS
Sequence in context: A305165 A294110 A136380 * A250142 A019583 A244908
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 18 2014
STATUS
approved