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 A194893 T(n,k)=Number of lower triangles of an n X n 0..k array with new values introduced in row major order 0..k and no two horizontal or vertical neighbors of any element equal 6
 1, 1, 2, 1, 3, 0, 1, 3, 6, 0, 1, 3, 24, 0, 0, 1, 3, 33, 192, 0, 0, 1, 3, 34, 1620, 1152, 0, 0, 1, 3, 34, 3936, 136080, 5760, 0, 0, 1, 3, 34, 5249, 1797696, 17962560, 26880, 0, 0, 1, 3, 34, 5556, 7418424, 2054111040, 3751608960, 118272, 0, 0, 1, 3, 34, 5586, 15005952 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Table starts .1.1......1.............1.................1...............1.................1 .2.3......3.............3.................3...............3.................3 .0.6.....24............33................34..............34................34 .0.0....192..........1620..............3936............5249..............5556 .0.0...1152........136080...........1797696.........7418424..........15005952 .0.0...5760......17962560........2054111040.....41521783200......282616583760 .0.0..26880....3751608960.....5741390328960.788547395813440.24289270603904160 .0.0.118272.1233597237120.39210440893622016 LINKS R. H. Hardin, Table of n, a(n) for n = 1..85 EXAMPLE Some solutions for n=4 k=4 ..0........0........0........0........0........0........0........0 ..1.2......1.2......1.2......0.1......1.2......0.1......1.2......1.2 ..1.3.3....1.2.3....3.0.0....2.3.0....3.3.1....2.3.4....3.0.4....3.2.0 ..4.4.0.2..4.0.1.4..4.1.3.2..1.4.4.2..2.0.1.3..4.0.2.3..2.0.1.2..4.4.0.3 CROSSREFS Sequence in context: A120251 A333429 A071490 * A141673 A127094 A221642 Adjacent sequences:  A194890 A194891 A194892 * A194894 A194895 A194896 KEYWORD nonn,tabl AUTHOR R. H. Hardin Sep 04 2011 STATUS approved

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Last modified May 25 05:45 EDT 2022. Contains 354048 sequences. (Running on oeis4.)