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A234213 Number of (n+1)X(4+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 11 1
5344, 38424, 257116, 2047712, 14743812, 128575264, 972664988, 9139171016, 71474160448, 709190594872, 5662773767964, 58270172020312, 471035924576320, 4959748822197500, 40377695201267784, 431210014799887324 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A234217

LINKS

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

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A031751 A023342 A050814 * A187435 A023939 A204863

Adjacent sequences:  A234210 A234211 A234212 * A234214 A234215 A234216

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 21 2013

STATUS

approved

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Last modified October 28 21:20 EDT 2020. Contains 338064 sequences. (Running on oeis4.)