A235835 Number of (3+1)X(n+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

3459, 110923, 3294824, 87473420, 2193348247, 52199681720, 1198855696992, 26756779774314, 584558763163487, 12561692389108238, 266585565128278250, 5604206528796221156, 116980551132195105510, 2429031400047509662778

Offset

1,1

Comments

Row 3 of A235833

Links

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

Example

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

Crossrefs

Sequence in context: A251485 A082242 A321866 * A235830 A235586 A252967

Adjacent sequences: A235832 A235833 A235834 * A235836 A235837 A235838

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved