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A186841 Number of (n+1)X(n+1) binary arrays with no 2X2 subblock diagonal sum less antidiagonal sum equal to any horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum 0
16, 218, 6138, 313412, 32584548, 6898399878, 2945465789710, 2594103702923620, 4715152509383191910 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A186850

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for 3X3

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

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

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

CROSSREFS

Sequence in context: A076097 A163739 A239042 * A130606 A193380 A076073

Adjacent sequences:  A186838 A186839 A186840 * A186842 A186843 A186844

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 27 2011

STATUS

approved

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Last modified October 20 04:37 EDT 2019. Contains 328247 sequences. (Running on oeis4.)