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A234077 Number of (n+1)X(2+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 10 1
476, 2900, 18048, 122532, 849760, 6162980, 45072784, 336800596, 2522650128, 19088198500, 144496686736, 1099235735220, 8361799506432, 63763278750940, 486171217676608, 3711468980550724, 28330997175625424, 216398588504027700 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A234083

LINKS

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

FORMULA

Empirical: a(n) = 5*a(n-1) +110*a(n-2) -519*a(n-3) -4442*a(n-4) +20823*a(n-5) +81982*a(n-6) -411807*a(n-7) -690514*a(n-8) +4300171*a(n-9) +1861828*a(n-10) -23858897*a(n-11) +6643493*a(n-12) +68557098*a(n-13) -46245180*a(n-14) -103634888*a(n-15) +97714860*a(n-16) +81249120*a(n-17) -98401776*a(n-18) -30312448*a(n-19) +51151424*a(n-20) +3449856*a(n-21) -13460736*a(n-22) +567296*a(n-23) +1597440*a(n-24) -98304*a(n-25) -65536*a(n-26)

EXAMPLE

Some solutions for n=4

..0..3..0....2..0..2....0..1..2....0..1..3....3..4..2....2..1..2....1..2..3

..2..3..2....3..3..1....0..3..4....3..2..4....4..1..3....0..3..4....1..4..1

..4..1..4....0..2..4....3..2..1....0..3..1....3..2..4....0..1..2....1..2..1

..1..2..3....3..1..1....0..3..0....3..2..4....4..1..3....3..0..3....3..0..3

..4..3..0....4..4..2....2..3..2....4..1..1....3..4..2....1..0..1....0..1..0

CROSSREFS

Sequence in context: A048428 A253395 A171077 * A205287 A236519 A205895

Adjacent sequences:  A234074 A234075 A234076 * A234078 A234079 A234080

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2013

STATUS

approved

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Last modified October 26 11:29 EDT 2020. Contains 338027 sequences. (Running on oeis4.)