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A205223 Number of (n+1)X6 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
340, 868, 2072, 5424, 14220, 37308, 98924, 258612, 690332, 1801140, 4823028, 12573964, 33713996, 87894316, 235753764, 614834884, 1649053700, 4302525980, 11537536124, 30114608028, 80736058468, 210803561324, 565034328516 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A205226

LINKS

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

FORMULA

Empirical: a(n) = a(n-1) +40*a(n-2) -39*a(n-3) -718*a(n-4) +679*a(n-5) +7622*a(n-6) -6938*a(n-7) -53004*a(n-8) +45901*a(n-9) +252266*a(n-10) -203943*a(n-11) -832037*a(n-12) +607427*a(n-13) +1879588*a(n-14) -1159999*a(n-15) -2801339*a(n-16) +1245590*a(n-17) +2575872*a(n-18) -454224*a(n-19) -1379084*a(n-20) -108556*a(n-21) +562152*a(n-22) -574600*a(n-23) -124432*a(n-24) +891456*a(n-25) -365592*a(n-26) -123520*a(n-27) +130144*a(n-28) -24768*a(n-29) +132288*a(n-30) +15744*a(n-31) -33152*a(n-32) +3072*a(n-33) -384*a(n-34) for n>36

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A236896 A076748 A306865 * A238040 A237959 A232514

Adjacent sequences:  A205220 A205221 A205222 * A205224 A205225 A205226

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 23 2012

STATUS

approved

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Last modified December 5 22:21 EST 2021. Contains 349558 sequences. (Running on oeis4.)