STATUS
editing
approved
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Revision History for A231297
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Number of (n+1)X(3+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..2 introduced in row major order
(history; published version)
(history; published version)
STATUS
editing
approved
LINKS
R. H. Hardin, <a href="/A231297/b231297.txt">Table of n, a(n) for n = 1..210</a>
NAME
allocated for R. H. Hardin
Number of (n+1)X(3+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with values 0..2 introduced in row major order
DATA
4, 16, 69, 301, 1414, 6850, 33316, 162796, 797293, 3906788, 19152603, 93902795, 460455941, 2257842932, 11071788203, 54292311074, 266234310441, 1305534117780, 6401974363527, 31393453449193, 153944680060888, 754901179958837
OFFSET
1,1
COMMENTS
Column 3 of A291302
FORMULA
Empirical: a(n) = 3*a(n-1) +17*a(n-2) -23*a(n-3) -78*a(n-4) -11*a(n-5) +143*a(n-6) +431*a(n-7) -362*a(n-8) -763*a(n-9) +176*a(n-10) -60*a(n-11) +336*a(n-12) +448*a(n-13) -256*a(n-14) for n>16
EXAMPLE
Some solutions for n=4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..1....0..0..0..0
..0..0..0..1....0..0..0..1....0..0..0..1....0..0..1..1....1..1..0..0
..0..1..1..1....0..0..1..1....0..1..1..1....0..0..1..1....1..1..0..0
..1..1..2..2....1..1..1..0....1..1..1..1....0..1..1..1....1..1..0..0
..1..2..2..2....1..1..0..0....1..1..1..1....1..1..1..1....1..1..0..0
KEYWORD
allocated
nonn
AUTHOR
R. H. Hardin, Nov 07 2013
STATUS
approved
editing
NAME
allocated for R. H. Hardin
KEYWORD
allocated
STATUS
approved