A237918 Number of (n+1)X(4+1) 0..3 arrays with the upper median plus the lower median of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

63476, 1282504, 27873820, 636891488, 14163256928, 319272033708, 7170378195892, 161382511774196, 3629106051378200, 81717484559463064, 1838421822041726832, 41385101785859636936, 931379102458488697656, 20967387870826434629524

Offset

1,1

Comments

Column 4 of A237921

Links

R. H. Hardin, Table of n, a(n) for n = 1..100

Example

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

Crossrefs

Sequence in context: A115748 A226003 A203921 * A294147 A242142 A359872

Adjacent sequences: A237915 A237916 A237917 * A237919 A237920 A237921

Keyword

nonn

Author

R. H. Hardin, Feb 15 2014

Status

approved