A235900 Number of (n+1)X(6+1) 0..2 arrays with the minimum plus the maximum equal to the lower median plus the upper median in every 2X2 subblock

26189, 482809, 7234417, 124394337, 2053474753, 35883075329, 632701301249, 11571312666753, 216925831550465, 4198207054934401, 83584114997995777, 1712426772179540097, 36001893343301744641, 774894408114891798401

Offset

1,1

Comments

Column 6 of A235902

Links

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

Formula

Empirical: a(n) = 73*a(n-1) -1472*a(n-2) -10728*a(n-3) +630992*a(n-4) -1986032*a(n-5) -104786432*a(n-6) +555443712*a(n-7) +9789898752*a(n-8) -43326369792*a(n-9) -560505618432*a(n-10) +824673042432*a(n-11) +15817211117568*a(n-12) +30963778191360*a(n-13)

Example

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

Crossrefs

Sequence in context: A235435 A250972 A235096 * A245787 A034622 A004046

Adjacent sequences: A235897 A235898 A235899 * A235901 A235902 A235903

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved