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A241134 Number of nX3 0..2 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..2 introduced in row major order 1
1, 5, 24, 152, 935, 6150, 40504, 269481, 1797120, 12006500, 80271767, 536871242, 3591277652, 24025055521, 160729893196, 1075318230432, 7194178531255, 48131264332222, 322013597082816, 2154376343705369, 14413489436501544 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A241138

LINKS

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

FORMULA

Empirical: a(n) = 7*a(n-1) +3*a(n-2) -21*a(n-3) -45*a(n-4) -293*a(n-5) -87*a(n-6) +857*a(n-7) +2153*a(n-8) +3773*a(n-9) +501*a(n-10) -1147*a(n-11) -4888*a(n-12) -15704*a(n-13) +1372*a(n-14) -4728*a(n-15) +4720*a(n-16) +1656*a(n-17) -59632*a(n-18) -55392*a(n-19) -57664*a(n-20) -22400*a(n-21) -2304*a(n-22) -19456*a(n-23) -47104*a(n-24) -114688*a(n-25) -65536*a(n-26) for n>27

EXAMPLE

Some solutions for n=4

..0..0..1....0..0..0....0..0..0....0..1..1....0..0..0....0..1..0....0..0..0

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

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

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

CROSSREFS

Sequence in context: A111766 A228067 A322208 * A340358 A009424 A184597

Adjacent sequences:  A241131 A241132 A241133 * A241135 A241136 A241137

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 16 2014

STATUS

approved

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Last modified May 14 02:16 EDT 2021. Contains 343868 sequences. (Running on oeis4.)