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A271191 Number of nXnXn triangular 0..5 arrays with new values introduced in sequential zero-upwards order and exactly one upright 2x2x2 triangle having values all different. 0

%I #3 Apr 01 2016 12:36:08

%S 0,1,72,10794,4396148,5372968836,19590379147806,206003718526985328,

%T 6097257359554668961413

%N Number of nXnXn triangular 0..5 arrays with new values introduced in sequential zero-upwards order and exactly one upright 2x2x2 triangle having values all different.

%C Column 5 of A271194.

%e Some solutions for n=4

%e .....0........0........0........0........0........0........0........0

%e ....1.2......1.0......1.1......1.0......0.1......1.0......1.0......1.2

%e ...2.2.2....0.1.0....2.1.3....1.0.2....2.2.3....2.0.0....0.0.2....1.2.2

%e ..2.1.2.3..2.2.0.0..3.3.1.4..1.2.1.1..2.3.3.4..0.0.2.2..3.2.0.2..0.1.2.0

%Y Cf. A271194.

%K nonn

%O 1,3

%A _R. H. Hardin_, Apr 01 2016

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)