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 A194930 Number of lower triangles of an n X n 0..7 array with no element differing from any of its horizontal or vertical neighbors by more than one 0
 8, 62, 1070, 40194, 3308286, 596729942, 236134568314, 205098663583642, 391167151610036562, 1638606240965437583666, 15079495677916351972815638, 304904458867761348224836330046, 13547381816347935357119939144563302 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 7 of A194931 LINKS Table of n, a(n) for n=1..13. EXAMPLE Some solutions for 4X4 ..5........3........2........1........2........5........5........1 ..4.5......2.1......3.2......2.3......1.1......4.3......4.4......1.1 ..4.5.6....1.2.1....4.3.3....3.4.4....2.1.2....3.4.4....5.5.4....1.1.2 ..5.6.7.7..2.1.0.0..4.3.2.2..3.4.3.3..2.1.1.0..4.3.4.5..5.5.4.4..1.2.3.3 CROSSREFS Sequence in context: A356461 A099335 A356238 * A346625 A132506 A080270 Adjacent sequences: A194927 A194928 A194929 * A194931 A194932 A194933 KEYWORD nonn AUTHOR R. H. Hardin Sep 05 2011 STATUS approved

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Last modified October 3 06:08 EDT 2023. Contains 365842 sequences. (Running on oeis4.)