A273962 Number of nX3 0..3 arrays with no three equal values forming an isosceles right triangle, and new values introduced in 0..3 order.

5, 105, 2766, 49702, 784878, 13322548, 232027264, 4056338728, 70402715640, 1221782263634, 21228810396872, 368923543916728, 6410003754557834, 111371494441358332, 1935130749075453956

Offset

1,1

Comments

Column 3 of A273964.

Links

Table of n, a(n) for n=1..15.

Example

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

Crossrefs

Cf. A273964.

Sequence in context: A034225 A273966 A114481 * A223043 A200851 A203471

Adjacent sequences: A273959 A273960 A273961 * A273963 A273964 A273965

Keyword

nonn

Author

R. H. Hardin, Jun 05 2016

Status

approved