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A253702 Number of (5+1)X(n+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically 1
680, 602, 878, 1120, 1632, 1914, 2626, 3598, 5568, 7834, 11444, 15184, 21204, 28724, 41780, 59166, 85802, 118564, 166932, 229624, 328208, 460790, 662480, 924528, 1309914, 1817614, 2579176, 3614912, 5154266, 7229288, 10245464, 14314250 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A253698

LINKS

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

FORMULA

Empirical: a(n) = -a(n-1) +a(n-2) +a(n-3) +2*a(n-4) +3*a(n-5) +2*a(n-7) +3*a(n-8) -6*a(n-9) -5*a(n-10) -4*a(n-11) -6*a(n-12) +6*a(n-13) +6*a(n-14) -5*a(n-15) -5*a(n-16) -8*a(n-17) -6*a(n-18) +6*a(n-19) +6*a(n-20) +5*a(n-21) +3*a(n-22) -a(n-23) +a(n-24) +a(n-25) +a(n-26) +a(n-27) for n>34

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

CROSSREFS

Sequence in context: A097772 A257828 A253695 * A235013 A154036 A185765

Adjacent sequences:  A253699 A253700 A253701 * A253703 A253704 A253705

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 09 2015

STATUS

approved

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Last modified January 29 05:09 EST 2022. Contains 350672 sequences. (Running on oeis4.)