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A233993 Number of (n+1)X(4+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18 1
17156, 51026, 150572, 560408, 2021016, 9191620, 39038268, 213791308, 1031265884, 6478189956, 33941673948, 230895962640, 1269494065360, 8976203094604, 50758367608856, 364579538686824, 2098173723540476, 15134353956170396 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A233997

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..152

EXAMPLE

Some solutions for n=3

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

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

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

..1..1..6..1..2....6..2..1..0..6....1..0..4..1..0....2..6..1..6..1

CROSSREFS

Sequence in context: A218247 A235891 A251207 * A043621 A293478 A076774

Adjacent sequences:  A233990 A233991 A233992 * A233994 A233995 A233996

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 18 2013

STATUS

approved

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Last modified January 17 23:37 EST 2020. Contains 330995 sequences. (Running on oeis4.)