A235899 Number of (n+1)X(5+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock

6849, 89857, 1030145, 12931393, 160019457, 2053474753, 26681279873, 354762714433, 4797433339137, 66057474247873, 923795771239553, 13107635240213569, 188369869967105025, 2738120806077672385

Offset

1,1

Comments

Column 5 of A235902

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = 49*a(n-1) -680*a(n-2) -2152*a(n-3) +106896*a(n-4) -244848*a(n-5) -6547072*a(n-6) +18222592*a(n-7) +219136000*a(n-8) -245395456*a(n-9) -3590750208*a(n-10) -5119672320*a(n-11)

Example

Some solutions for n=2
..0..0..0..1..0..1....0..0..1..1..0..1....1..0..2..2..1..1....0..1..1..1..0..2
..1..1..1..2..1..0....1..1..2..2..1..2....1..2..0..0..1..1....1..2..0..2..1..1
..2..2..2..1..0..1....2..2..1..1..0..1....1..0..2..2..1..1....0..1..1..1..0..0

Crossrefs

Sequence in context: A206313 A250077 A178277 * A212076 A252565 A066878

Adjacent sequences: A235896 A235897 A235898 * A235900 A235901 A235902

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved