

A006763


Number of fixed properly3dimensional polyominoes with n cells.
(Formerly M5232)


2



0, 0, 0, 32, 348, 2836, 21225, 154741, 1123143, 8185403, 60088748, 444688325
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OFFSET

1,4


REFERENCES

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS

Table of n, a(n) for n=1..12.
W. F. Lunnon, Counting multidimensional polyominoes. Computer Journal 18 (1975), no. 4, pp. 366367.


FORMULA

a(n) = A001931(n)  3 * (A001168(n)  1) for n > 1.  Sean A. Irvine, Jul 27 2017


CROSSREFS

A column of A195739.
Sequence in context: A009797 A240293 A254953 * A158074 A200531 A260359
Adjacent sequences: A006760 A006761 A006762 * A006764 A006765 A006766


KEYWORD

nonn,more


AUTHOR

N. J. A. Sloane.


STATUS

approved



