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A233899 Number of (n+1)X(3+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of all six edge and diagonal differences equal to 35 1
2688, 12152, 47232, 267792, 1194976, 8198512, 39075520, 304813760, 1473291680, 12478506368, 59636481088, 535236270096, 2503920262432, 23537439554576, 107432965882112, 1051469946423328, 4680802226580960, 47517003414905184 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A233903
LINKS
FORMULA
Empirical recurrence of order 69 (see link above)
EXAMPLE
Some solutions for n=3
..2..5..4..6....2..1..5..6....5..4..2..4....2..1..5..6....2..4..1..2
..3..1..3..2....5..3..4..2....3..1..0..1....5..3..4..2....0..3..5..3
..4..5..4..0....2..1..5..6....5..4..2..4....1..2..6..5....2..4..1..2
..3..1..3..2....5..3..4..2....2..6..3..6....5..3..4..2....6..3..5..3
CROSSREFS
Sequence in context: A217335 A243993 A157613 * A350184 A186833 A229682
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2013
STATUS
approved

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Last modified May 30 15:08 EDT 2024. Contains 372968 sequences. (Running on oeis4.)