A273966 Number of nX3 0..3 arrays with no three equal values forming an isosceles triangle, and new values introduced in 0..3 order.

5, 105, 1946, 24587, 211121, 2116450, 15084593, 112714143, 511843593, 2841058530, 10796121020, 48330908582

Offset

1,1

Comments

Column 3 of A273968.

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for n=4
..0..1..2. .0..1..1. .0..1..2. .0..1..2. .0..1..2. .0..0..0. .0..0..1
..0..2..3. .0..2..3. .1..0..2. .1..3..3. .3..1..2. .1..2..2. .2..3..3
..3..3..1. .3..1..0. .1..0..2. .3..2..0. .2..2..0. .1..3..3. .3..2..0
..0..1..2. .3..1..0. .1..0..2. .0..1..0. .0..3..0. .3..1..0. .3..1..1

Crossrefs

Cf. A273968.

Sequence in context: A083252 A327273 A034225 * A114481 A273962 A223043

Adjacent sequences: A273963 A273964 A273965 * A273967 A273968 A273969

Keyword

nonn

Author

R. H. Hardin, Jun 05 2016

Status

approved