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A271032 Number of n X n X n triangular 0..6 arrays with some element less than a w, nw or ne neighbor exactly once. 0

%I #5 Apr 17 2022 22:26:04

%S 0,112,5040,188034,6872424,255757328,9790184488,386105784866,

%T 15669594394610,653037680536962,27884254995169022,1217213333853178756

%N Number of n X n X n triangular 0..6 arrays with some element less than a w, nw or ne neighbor exactly once.

%C Column 6 of A271034.

%e Some solutions for n=4

%e .....0........0........1........1........1........1........1........0

%e ....0.1......2.2......0.2......1.1......1.1......0.2......1.2......0.0

%e ...1.4.5....2.3.4....0.2.2....2.2.5....3.5.5....2.2.2....1.2.2....0.0.4

%e ..1.2.5.5..5.3.4.4..4.4.4.5..6.6.6.5..2.5.5.5..6.6.6.6..3.3.2.3..4.4.5.4

%Y Cf. A271034.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 29 2016

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)