login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A272368 Number of polycubes with n cells, allowing vertex connections and edge connections as well as face connections, identifying mirror images. 1
1, 3, 14, 165, 2676, 59541, 1448610 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

There are 3 ways to join two cells of the cubic grid at faces, edges, or vertices, so a(2) = 3.

CROSSREFS

Cf. A268666 (no vertex connections), A038119 (face connections only).

Sequence in context: A185238 A090897 A120459 * A108798 A260995 A220438

Adjacent sequences:  A272365 A272366 A272367 * A272369 A272370 A272371

KEYWORD

nonn,nice,more,hard

AUTHOR

George Sicherman, Apr 27 2016

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified January 19 21:47 EST 2020. Contains 331066 sequences. (Running on oeis4.)