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 A265957 Number of nX3 integer arrays with each element equal to the number of horizontal, vertical, diagonal and antidiagonal neighbors less than itself. 1
 5, 235, 2031, 31940, 1002328, 17873307, 329266534, 7935241725, 162833269398, 3241416484700, 70876286404463, 1494327583037059, 30782640480213077, 653374627522113949, 13795598605189141491, 288087129209981654443 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 3 of A265960. LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..1..0..2....0..0..0....0..3..0....0..1..2....2..1..2....1..1..2....0..4..1 ..4..1..2....3..8..2....0..8..4....1..1..5....4..0..5....4..0..3....0..8..0 ..2..8..4....2..7..3....4..0..3....1..1..4....4..0..3....0..8..4....0..0..0 ..0..2..0....1..0..0....0..0..2....1..0..1....1..3..1....0..0..0....2..5..0 CROSSREFS Cf. A265960. Sequence in context: A142668 A330308 A157710 * A137085 A153025 A140518 Adjacent sequences: A265954 A265955 A265956 * A265958 A265959 A265960 KEYWORD nonn AUTHOR R. H. Hardin, Dec 19 2015 STATUS approved

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Last modified May 19 07:43 EDT 2024. Contains 372666 sequences. (Running on oeis4.)