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A027567
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Number of distinct (modulo rotation and reflection) n X n panmagic = pandiagonal = diabolic = Nasik squares.
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2
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OFFSET
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1,4
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LINKS
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Table of n, a(n) for n=1..6.
Harvey Heinz, Pandiagonal 5 X 5.
D. N. Lehmer, A census of squares of order 4, magic in rows, columns, and diagonals, Bull. Amer. Math. Soc. 39 (1933), 981-982.
Barkley Rosser and R. J. Walker, On the transformation group for diabolic magic squares of order four, Bull. Amer. Math. Soc. 44 (1938), 416-420.
Eric Weisstein's World of Mathematics, Panmagic Square
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CROSSREFS
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Cf. A006052.
Sequence in context: A208442 A203488 A162700 * A271188 A033475 A053060
Adjacent sequences: A027564 A027565 A027566 * A027568 A027569 A027570
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KEYWORD
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nonn,hard,more
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AUTHOR
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Eric W. Weisstein
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EXTENSIONS
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Corrected by Eric Weisstein Mar 14 2003 to include only distinct squares; Hunter and Madachy give the count of all such squares (384).
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STATUS
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approved
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