A253531 Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically

85663, 176266, 327147, 949158, 1744459, 4292539, 8304638, 18590483, 37412196, 79632497, 161715507, 333968028, 674473122, 1366396447, 2737489031, 5482593881, 10922295848, 21751547857, 43229912120, 85944892631, 170816625840

Offset

1,1

Comments

Column 6 of A253533

Links

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

Formula

Empirical: a(n) = 10*a(n-1) -37*a(n-2) +42*a(n-3) +106*a(n-4) -388*a(n-5) +284*a(n-6) +632*a(n-7) -1382*a(n-8) +364*a(n-9) +1690*a(n-10) -1924*a(n-11) -208*a(n-12) +1808*a(n-13) -1076*a(n-14) -392*a(n-15) +751*a(n-16) -262*a(n-17) -93*a(n-18) +106*a(n-19) -34*a(n-20) +4*a(n-21) for n>42

Example

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

Crossrefs

Sequence in context: A200657 A201269 A184212 * A179575 A234805 A186065

Adjacent sequences: A253528 A253529 A253530 * A253532 A253533 A253534

Keyword

nonn

Author

R. H. Hardin, Jan 03 2015

Status

approved