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A233660 Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 26 1
1220, 8324, 56212, 411848, 3007000, 22597004, 168812492, 1277805668, 9619090052, 72923111912, 550545635664, 4173813523988, 31551152184268, 239127142655612, 1808804180109732, 13705085820170408, 103705720260565068 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A233665

LINKS

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

R. H. Hardin, Empirical recurrence of order 74

FORMULA

Empirical recurrence of order 74 (see link above)

EXAMPLE

Some solutions for n=3

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

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

..5..2..5....6..4..2....5..1..5....2..2..0....1..5..1....5..5..4....3..4..3

..5..6..5....3..1..4....5..4..5....1..5..3....2..5..4....4..1..1....0..4..0

CROSSREFS

Sequence in context: A293479 A031781 A069400 * A015279 A179140 A091790

Adjacent sequences:  A233657 A233658 A233659 * A233661 A233662 A233663

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 14 2013

STATUS

approved

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Last modified October 15 20:17 EDT 2021. Contains 348034 sequences. (Running on oeis4.)