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A253522 Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock diagonal minimum minus antidiagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal maximum nondecreasing vertically 1
192393, 666239, 791232, 930046, 1439791, 2662626, 5591131, 13347833, 35219532, 98975447, 287819707, 851247242, 2537610573, 7591819430, 22748438826, 68210982499, 204589792458, 613715676841, 1841080822709, 5523161533648 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A253524
LINKS
FORMULA
Empirical: a(n) = 9*a(n-1) -33*a(n-2) +65*a(n-3) -75*a(n-4) +51*a(n-5) -19*a(n-6) +3*a(n-7) for n>15
EXAMPLE
Some solutions for n=1
..0..1..2..0..0..2..0....0..1..2..1..0..0..2....0..1..0..2..0..1..1
..2..1..2..0..0..1..0....0..1..2..1..0..0..0....2..0..0..0..0..2..1
CROSSREFS
Sequence in context: A178289 A221003 A206619 * A254420 A254427 A253373
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 03 2015
STATUS
approved

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Last modified June 21 01:13 EDT 2024. Contains 373535 sequences. (Running on oeis4.)