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A233952 Number of (n+1)X(2+1) 0..5 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal 1
380, 2820, 20616, 152216, 1120996, 8268188, 60946532, 449407260, 3313237900, 24429430652, 180112793272, 1327993006976, 9791139758744, 72190609948984, 532256344763388, 3924338763672756, 28933966915286288, 213330346429898904 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A233958

LINKS

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

FORMULA

Empirical: a(n) = 3*a(n-1) +76*a(n-2) -161*a(n-3) -1932*a(n-4) +3277*a(n-5) +22377*a(n-6) -32880*a(n-7) -128727*a(n-8) +173771*a(n-9) +368053*a(n-10) -472908*a(n-11) -488012*a(n-12) +600604*a(n-13) +270148*a(n-14) -316676*a(n-15) -46496*a(n-16) +44736*a(n-17) +6656*a(n-18) -256*a(n-19)

EXAMPLE

Some solutions for n=4

..3..2..3....4..2..3....0..1..3....4..2..0....4..5..3....5..3..5....5..3..1

..2..4..2....5..3..1....2..3..4....3..1..2....2..3..2....3..4..3....4..2..3

..3..5..3....3..2..3....3..1..3....2..3..1....3..1..3....5..3..1....5..3..5

..2..4..5....1..3..1....2..3..4....4..2..0....2..3..2....4..2..3....4..2..4

..3..5..3....0..1..0....3..5..3....5..3..1....0..1..3....2..3..5....2..1..2

CROSSREFS

Sequence in context: A158597 A252122 A250635 * A259520 A188307 A214145

Adjacent sequences: A233949 A233950 A233951 * A233953 A233954 A233955

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2013

STATUS

approved

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Last modified February 8 23:03 EST 2023. Contains 360153 sequences. (Running on oeis4.)