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A281330
Number of 5Xn 0..2 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
1
0, 2976, 521848, 37854870, 2628860468, 166805996158, 10160537599967, 600433381268898, 34723542072723416, 1975325863716030310, 110929557975063540816, 6165067026942753179636, 339710976507404522326590
OFFSET
1,2
COMMENTS
Row 5 of A281326.
LINKS
EXAMPLE
Some solutions for n=2
..0..0. .0..1. .0..0. .0..0. .0..1. .0..1. .0..1. .0..1. .0..0. .0..0
..1..0. .0..0. .0..1. .0..1. .0..1. .0..0. .2..0. .1..2. .1..1. .0..1
..1..1. .2..0. .2..2. .1..0. .1..1. .0..1. .0..2. .0..0. .2..1. .0..2
..0..1. .2..2. .0..2. .0..1. .2..1. .2..2. .1..2. .0..1. .1..1. .0..1
..1..1. .2..0. .1..2. .1..0. .1..2. .1..0. .2..2. .1..0. .2..1. .0..2
CROSSREFS
Cf. A281326.
Sequence in context: A124595 A186549 A236140 * A289455 A360666 A202775
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 20 2017
STATUS
approved