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A205222
Number of (n+1)X5 0..1 arrays with the number of equal 2X2 subblock diagonal pairs and equal antidiagonal pairs differing from each horizontal or vertical neighbor, and new values 0..1 introduced in row major order.
1
132, 340, 824, 2144, 5424, 14072, 35928, 92736, 237864, 612368, 1573928, 4047688, 10411512, 26767752, 68864896, 177055904, 455490384, 1171235368, 3012822192, 7747956384, 19928887784, 51254241064, 131827156016, 339054785000
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OFFSET
1,1
COMMENTS
Column 4 of
A205226
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = a(n-1) +16*a(n-2) -13*a(n-3) -98*a(n-4) +63*a(n-5) +280*a(n-6) -128*a(n-7) -352*a(n-8) +52*a(n-9) +150*a(n-10) +104*a(n-11) -72*a(n-12) +16*a(n-13) -8*a(n-14) for n>16
EXAMPLE
Some solutions for n=4
..0..0..1..0..0....0..0..0..0..0....0..1..0..1..0....0..1..0..0..0
..0..0..1..1..1....1..1..0..0..1....1..0..0..1..1....0..1..1..1..0
..1..1..0..0..1....1..1..0..1..0....0..0..0..0..0....1..0..0..1..0
..0..1..0..0..1....0..0..0..1..1....1..1..0..0..1....1..0..0..1..1
..0..1..1..1..1....0..1..1..1..1....1..1..0..1..0....0..1..1..1..1
CROSSREFS
Sequence in context:
A063365
A116869
A035141
*
A116154
A305067
A278128
Adjacent sequences:
A205219
A205220
A205221
*
A205223
A205224
A205225
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Jan 23 2012
STATUS
approved
