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A265923 Number of nX3 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique. 1
92, 1740, 17936, 174000, 1671744, 15962560, 152267520, 1451371264, 13834836992, 131883277312, 1257236156416, 11986527891456, 114277874876416, 1089597587963904, 10388632576131072, 99054000222699520, 944443268554031104 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A265928.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 8*a(n-1) +96*a(n-2) -736*a(n-3) -2464*a(n-4) +20480*a(n-5) +13312*a(n-6) -196096*a(n-7) +78592*a(n-8) +600064*a(n-9) -589824*a(n-10) for n>13

EXAMPLE

Some solutions for n=4

..1..4..0....2..3..1....2..1..3....1..4..4....0..0..3....0..4..1....2..4..0

..2..3..1....0..0..4....1..0..4....0..1..3....1..1..2....2..1..4....4..0..3

..3..1..4....3..4..0....2..1..3....1..0..0....4..0..0....3..4..0....2..1..1

..2..0..1....1..0..4....1..4..0....2..3..1....3..2..2....2..2..1....4..3..3

CROSSREFS

Cf. A265928.

Sequence in context: A232795 A269439 A269623 * A249236 A166824 A248451

Adjacent sequences:  A265920 A265921 A265922 * A265924 A265925 A265926

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2015

STATUS

approved

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Last modified May 21 15:36 EDT 2022. Contains 353921 sequences. (Running on oeis4.)