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A075679 Number of free (rotations and reflections count as same shape) polyominoids (shapes made of faces of cubes) with n squares. 1
1, 2, 9, 54, 448, 4650, 53611, 655033, 8259635, 106371085, 1391032357, 18412269694 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..12.

CROSSREFS

Cf. A075678, A056846.

Sequence in context: A222014 A127128 A064151 * A001757 A078455 A036074

Adjacent sequences:  A075676 A075677 A075678 * A075680 A075681 A075682

KEYWORD

hard,nonn

AUTHOR

Joseph Myers, Sep 24 2002

STATUS

approved

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Last modified October 25 15:47 EDT 2014. Contains 248556 sequences.