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A274066 Number of nX2 0..2 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..2 order. 0
2, 9, 50, 285, 1129, 4791, 17219, 63640, 182143, 598332, 1622713, 4807733, 12097755, 34041279, 81727927, 221397591, 519077550, 1343959858, 3089610203, 7776466084, 17320256047, 42922087359, 94826300116, 228462204560 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A274068.

LINKS

Table of n, a(n) for n=1..24.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A274068.

Sequence in context: A262752 A138416 A328741 * A055997 A115599 A047069

Adjacent sequences:  A274063 A274064 A274065 * A274067 A274068 A274069

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 09 2016

STATUS

approved

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Last modified September 21 19:57 EDT 2020. Contains 337273 sequences. (Running on oeis4.)