A236520 Number of (n+1)X(5+1) 0..1 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

1392, 25023, 421516, 6591144, 99655626, 1448355717, 20627269098, 287546676233, 3961701125458, 53967671743495, 730462750680051, 9829887818910553, 131842908928542572, 1763320040951286382, 23544957470382711493

Offset

1,1

Comments

Column 5 of A236523

Links

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

Example

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

Crossrefs

Sequence in context: A249970 A069422 A202050 * A235657 A094666 A163043

Adjacent sequences: A236517 A236518 A236519 * A236521 A236522 A236523

Keyword

nonn

Author

R. H. Hardin, Jan 27 2014

Status

approved