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A206381 Number of (n+1)X7 0..3 arrays with every 2X2 subblock having the same number of equal diagonal or antidiagonal elements, and new values 0..3 introduced in row major order 1
385465, 222329489, 137393517193, 85678539791333, 53482634218458697, 33391295169652273181, 20848171803769792984489, 13016855431061639609291213, 8127274925445989337637081801, 5074392067217049794271345475469 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A206383

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..26

EXAMPLE

Some solutions for n=4

..0..0..0..0..0..0..0....0..0..1..0..0..0..2....0..0..1..1..2..2..3

..0..1..0..1..0..2..0....3..0..0..0..2..0..0....2..2..2..3..3..0..3

..3..0..3..0..2..1..2....2..3..0..1..0..3..0....1..1..0..0..2..0..2

..1..3..2..3..0..2..0....0..2..3..0..3..3..3....2..3..2..1..1..3..2

..2..1..3..1..3..0..1....3..0..2..3..2..3..2....2..3..0..3..0..3..2

CROSSREFS

Sequence in context: A205589 A157843 A206167 * A234216 A258686 A157739

Adjacent sequences:  A206378 A206379 A206380 * A206382 A206383 A206384

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 07 2012

STATUS

approved

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Last modified June 20 08:43 EDT 2021. Contains 345162 sequences. (Running on oeis4.)