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A237681 Number of (n+1)X(4+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock 1
15948, 308814, 5732688, 109962932, 2160608712, 42145629006, 813403060652, 15785972703066, 307676496617348, 5982797095826786, 116075340014467886, 2255217045668068532, 43858394750378508360, 852358093223899940980 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A237683

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..148

EXAMPLE

Some solutions for n=1

..0..2..1..2..2....1..0..0..2..1....2..2..0..2..2....0..2..1..2..0

..2..1..2..2..2....1..0..1..0..1....0..0..0..1..2....1..1..1..0..1

CROSSREFS

Sequence in context: A237071 A251848 A129473 * A218642 A151811 A151877

Adjacent sequences:  A237678 A237679 A237680 * A237682 A237683 A237684

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 11 2014

STATUS

approved

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Last modified October 22 19:03 EDT 2020. Contains 337953 sequences. (Running on oeis4.)