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 A270856 Number of 7 X 7 X 7 triangular 0..n arrays with some element plus some adjacent element totalling n+1, n or n-1 exactly once. 0
 0, 0, 460494, 4875050400, 5281372355106, 2104222937252028, 358240737864481086, 41234776662339168204, 2798233542174582927894, 142439611138184581460718 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 COMMENTS Row 7 of A270850. LINKS Table of n, a(n) for n=1..10. EXAMPLE Some solutions for n=3 ........0..............1..............1..............0..............1 .......0.1............0.1............0.0............0.1............0.0 ......1.0.0..........0.0.0..........1.0.1..........0.0.0..........0.0.0 .....0.0.0.1........0.0.0.1........1.0.0.0........1.0.0.0........0.0.0.0 ....0.0.0.1.0......0.0.0.0.0......0.0.1.0.1......0.1.0.0.0......0.0.0.1.0 ...0.1.0.0.0.1....0.1.0.0.0.0....0.1.0.0.0.0....0.0.0.1.0.0....0.0.0.0.0.1 ..1.0.0.0.1.0.0..0.0.0.0.0.0.1..1.0.0.1.0.0.1..1.0.0.0.0.0.1..0.0.0.0.0.1.0 CROSSREFS Cf. A270850. Sequence in context: A274811 A202600 A114671 * A295475 A205765 A216068 Adjacent sequences: A270853 A270854 A270855 * A270857 A270858 A270859 KEYWORD nonn AUTHOR R. H. Hardin, Mar 24 2016 STATUS approved

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)