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A066454 Number of 3-dimensional polyominoes (or polycubes) with n cells and symmetry group of order exactly 2. 2
0, 0, 1, 4, 10, 34, 71, 246, 522, 1783, 3765, 12858, 27496 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..13.

CROSSREFS

Cf. A000162, A066453.

Sequence in context: A105680 A261577 A224217 * A301595 A022445 A091003

Adjacent sequences:  A066451 A066452 A066453 * A066455 A066456 A066457

KEYWORD

nonn

AUTHOR

Brendan Owen (brendan_owen(AT)yahoo.com), Dec 27 2001

STATUS

approved

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Last modified February 17 18:14 EST 2020. Contains 332005 sequences. (Running on oeis4.)