A048668 - OEIS

A048668

Number of rooted 7-dimensional "polycubes" with n cells, with no symmetries removed.

1, 14, 273, 5936, 137340, 3307878, 81972296, 2075032808, 53403322203, 1392729138920, 36718293579198, 976872759337356, 26189947759482689, 706808197553825794

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..14.

R. C. Schroeppel, A few mathematical experiments, Experimental Mathematics Workshop, Oakland, 2004.

FORMULA

a(n) = n * A151833(n). - Andrew Howroyd, Dec 05 2018

CROSSREFS

Row 7 of A048790.

Cf. A048663, A151833.

Sequence in context: A216986 A138560 A051690 * A001820 A211900 A215544

Adjacent sequences: A048665 A048666 A048667 * A048669 A048670 A048671

KEYWORD

nonn

AUTHOR

Dan Hoey

EXTENSIONS

a(8)-a(14) from Andrew Howroyd, Dec 05 2018

STATUS

approved