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A129947 Smallest possible side length for simple perfect squared square of order n; or 0 if no such a square exists. +0
1
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 112, 110, 110, 120, 147, 212, 180 (list; graph; listen)
OFFSET

1,21

COMMENT

Skinner (1993) gives the smallest possible side length (and smallest order for each) as 110 (22), 112 (21), 120 (24), 139 (22), 140 (23), ... for simple perfect squared squares.

Estimates for next few terms: a(29) <= 201, a(30) <= 255, a(31) <= 237.

REFERENCES

Skinner, J. D. II. Squared Squares: Who's Who & What's What. Published by the author, 1993.

LINKS

Anderson, S., Perfect Rectangles, Perfect Squares.

Eric Weisstein, Link to a section of The World of Mathematics. Perfect Square Dissection.

CROSSREFS

Cf. A006983 = number of simple perfect squared squares of order n.

Sequence in context: A156407 A103849 A010032 this_sequence A096680 A109383 A036301

Adjacent sequences: A129944 A129945 A129946 this_sequence A129948 A129949 A129950

KEYWORD

more,nonn

AUTHOR

Alexander Adamchuk (alex(AT)kolmogorov.com), Jun 09 2007, corrected Jun 11 2007

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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