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A156393 Number of 7X7 arrays of squares of integers, symmetric about the diagonal and under 90 degree rotation, with all rows summing to n. 0
1, 0, 0, 0, 4, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 14, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 5, 13, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 4, 18, 0, 0, 0, 0, 0, 0, 6, 6, 0, 0, 0 (list; graph; refs; listen; history; internal format)
OFFSET

0,5

EXAMPLE

All solutions for n=4

...0.1.1.0.1.1.0...0.1.1.0.1.1.0...1.0.1.0.1.0.1...1.1.0.0.0.1.1

...1.0.1.0.1.0.1...1.1.0.0.0.1.1...0.1.1.0.1.1.0...1.0.1.0.1.0.1

...1.1.0.0.0.1.1...1.0.1.0.1.0.1...1.1.0.0.0.1.1...0.1.1.0.1.1.0

...0.0.0.4.0.0.0...0.0.0.4.0.0.0...0.0.0.4.0.0.0...0.0.0.4.0.0.0

...1.1.0.0.0.1.1...1.0.1.0.1.0.1...1.1.0.0.0.1.1...0.1.1.0.1.1.0

...1.0.1.0.1.0.1...1.1.0.0.0.1.1...0.1.1.0.1.1.0...1.0.1.0.1.0.1

...0.1.1.0.1.1.0...0.1.1.0.1.1.0...1.0.1.0.1.0.1...1.1.0.0.0.1.1

CROSSREFS

Sequence in context: A101193 A013334 A185232 * A096623 A171914 A200627

Adjacent sequences:  A156390 A156391 A156392 * A156394 A156395 A156396

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net) Feb 09 2009

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Last modified February 15 06:55 EST 2012. Contains 205694 sequences.