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A217960 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..2 nX4 array 1
17, 321, 5415, 93765, 1602741, 27317977, 465184959, 7919256577, 134805742899, 2294680520773, 39060078023831, 664879775228995, 11317562137329901, 192647146079979077, 3279232808653682467, 55818982418231563527 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A217964

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..38

FORMULA

Empirical: a(n) = 19*a(n-1) -23*a(n-2) -144*a(n-3) -675*a(n-4) +378*a(n-5) +3291*a(n-6) +4937*a(n-7) -1247*a(n-8) -12054*a(n-9) -12369*a(n-10) -5436*a(n-11) -816*a(n-12) +744*a(n-13) +364*a(n-14) +100*a(n-15) for n>16

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A244764 A089571 A196455 * A221583 A091464 A015693

Adjacent sequences:  A217957 A217958 A217959 * A217961 A217962 A217963

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 16 2012

STATUS

approved

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Last modified November 28 13:47 EST 2021. Contains 349413 sequences. (Running on oeis4.)