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A265925 Number of nX5 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique. 1
1252, 44916, 273616, 1546496, 8821464, 51986544, 309447168, 1904101280, 11662822720, 73936333840, 461379072240, 2989492800168, 18885457119368, 124303652993736, 791413858826744, 5265714915850752, 33682209801072272 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A265928.

LINKS

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

FORMULA

Empirical: a(n) = 14*a(n-1) +114*a(n-2) -2416*a(n-3) -1855*a(n-4) +173910*a(n-5) -325748*a(n-6) -6792128*a(n-7) +23703581*a(n-8) +156116706*a(n-9) -782263598*a(n-10) -2103771328*a(n-11) +15368975735*a(n-12) +14058283410*a(n-13) -195305474720*a(n-14) +17084928400*a(n-15) +1657274833004*a(n-16) -1220297285976*a(n-17) -9420990684080*a(n-18) +11379059105120*a(n-19) +35043535878848*a(n-20) -55963552156032*a(n-21) -80348150064128*a(n-22) +159059277862912*a(n-23) +100278463577088*a(n-24) -247797165996032*a(n-25) -52668192727040*a(n-26) +177859657482240*a(n-27) +10696615526400*a(n-28) -42129240883200*a(n-29) -726663168000*a(n-30) +3114270720000*a(n-31) for n>39

EXAMPLE

Some solutions for n=2

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

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

CROSSREFS

Cf. A265928.

Sequence in context: A344035 A265970 A264291 * A252149 A252157 A252150

Adjacent sequences:  A265922 A265923 A265924 * A265926 A265927 A265928

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2015

STATUS

approved

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Last modified January 18 06:52 EST 2022. Contains 350454 sequences. (Running on oeis4.)