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A273965 Number of nX2 0..3 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..3 order. 0
2, 10, 105, 1264, 13045, 136063, 1273961, 11936399, 95697853, 800561388, 5824237329, 42821430074, 277065391875 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A273968.
LINKS
EXAMPLE
Some solutions for n=4
..0..1. .0..1. .0..0. .0..1. .0..1. .0..0. .0..0. .0..1. .0..0. .0..1
..2..3. .2..1. .1..2. .2..1. .1..2. .1..2. .1..1. .2..2. .1..1. .0..2
..2..3. .0..0. .3..0. .3..3. .3..2. .1..2. .2..0. .1..0. .0..2. .0..2
..3..1. .2..3. .3..2. .1..1. .2..0. .0..3. .2..1. .1..0. .1..3. .1..2
CROSSREFS
Cf. A273968.
Sequence in context: A208730 A000595 A087234 * A273961 A365507 A049538
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 05 2016
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)