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A249080
Number of length n+5 0..3 arrays with every six consecutive terms having two times the sum of some two elements equal to the sum of the remaining four
1
1324, 1944, 2844, 4136, 5964, 8504, 11964, 18884, 29484, 45428, 68892, 102564, 149644, 243804, 391596, 618620, 958668, 1453724, 2153964, 3554444, 5775660, 9219020, 14417004, 22033164, 32862124, 54520044, 89029164, 142746476
OFFSET
1,1
COMMENTS
Column 3 of A249085
LINKS
FORMULA
Empirical: a(n) = a(n-1) +30*a(n-6) -30*a(n-7) -280*a(n-12) +280*a(n-13) +960*a(n-18) -960*a(n-19) -1024*a(n-24) +1024*a(n-25)
EXAMPLE
Some solutions for n=6
..3....3....1....1....3....3....0....0....0....1....2....2....3....1....0....0
..0....0....3....3....1....2....3....3....3....0....3....0....0....3....0....1
..2....2....3....3....0....0....0....3....1....0....0....3....0....2....2....2
..3....2....2....1....3....0....1....1....3....1....0....2....2....0....2....3
..2....1....3....1....2....1....0....2....0....1....1....2....2....0....3....2
..2....1....0....0....0....3....2....0....2....3....0....0....2....3....2....1
..0....0....1....1....3....3....3....3....3....1....2....2....0....1....0....0
..0....0....3....3....1....2....0....3....3....0....3....0....0....3....0....1
..2....2....0....0....0....0....3....0....1....0....0....0....3....2....2....2
..3....2....2....1....0....0....1....1....3....1....3....2....2....0....2....0
..2....1....0....1....2....1....0....2....3....1....1....2....2....0....3....2
CROSSREFS
Sequence in context: A186469 A145754 A020403 * A248984 A202374 A259415
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 20 2014
STATUS
approved