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A236053 Number of (n+1)X(6+1) 0..2 arrays colored with the difference of the maximum and minimum in each 2X2 subblock 1
46828, 128920, 297316, 741592, 1937236, 5604400, 14531028, 38664192, 103940452, 281356668, 753859448, 2024482660, 5476009648, 14709558024, 39423241044, 106472032536, 286341677420, 770669642520, 2071810312952, 5588216314764 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A236055

LINKS

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

FORMULA

Empirical: a(n) = 4*a(n-2) +24*a(n-4) +3*a(n-5) +4*a(n-6) +123*a(n-7) -513*a(n-9) +393*a(n-10) -1940*a(n-11) -6553*a(n-12) -2329*a(n-13) -21264*a(n-14) -12956*a(n-15) +6136*a(n-16) -13278*a(n-17) -21758*a(n-18) +155426*a(n-19) -77448*a(n-20) +448608*a(n-21) +574916*a(n-22) +20728*a(n-23) +1436288*a(n-24) +23184*a(n-25) +245120*a(n-26) +187872*a(n-27) +671424*a(n-28) +16128*a(n-29) +424000*a(n-30) -66048*a(n-31) +82944*a(n-32) +101376*a(n-34) for n>40

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A171103 A066359 A234774 * A109030 A093223 A250688

Adjacent sequences:  A236050 A236051 A236052 * A236054 A236055 A236056

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 18 2014

STATUS

approved

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Last modified November 19 11:09 EST 2019. Contains 329319 sequences. (Running on oeis4.)