A237221 Number of (n+1)X(3+1) 0..3 arrays with the maximum plus the lower median minus the upper median of every 2X2 subblock equal

8238, 161598, 3460428, 84409628, 2037318606, 52300962414, 1301392331506, 33744588767732, 848182477709216, 22007823530271976, 555830217187061862, 14402641623362731290, 364848130778339342868, 9438166161649538251946

Offset

1,1

Comments

Column 3 of A237225

Links

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

Example

Some solutions for n=2
..2..2..3..1....0..1..1..1....2..3..0..3....1..2..1..3....2..0..3..2
..3..3..0..0....3..2..3..2....3..2..3..2....1..1..0..0....1..3..2..3
..1..2..1..3....1..1..1..1....1..1..3..0....2..3..2..0....1..2..3..0

Crossrefs

Sequence in context: A230043 A045056 A221482 * A031850 A327418 A168664

Adjacent sequences: A237218 A237219 A237220 * A237222 A237223 A237224

Keyword

nonn

Author

R. H. Hardin, Feb 05 2014

Status

approved