login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A120104 Number of polyominoes consisting of 10 regular unit n-gons. 8
448, 4655, 76092, 30490, 80075, 430302, 2285047, 6078768, 20376032, 13303523, 21208739, 49734303, 131517548, 249598727, 540742895, 404616118, 549711709, 983715865, 1910489463, 3070327312 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..22.

Matthias Koch and Sascha Kurz, Enumeration of generalized polyominoes, preprint arXiv:math/0605144 [math.CO], 2006.

EXAMPLE

a(3)=448 because there are 448 polyiamonds consisting of 10 triangles;

a(4)=4655 because there are 4655 polyominoes consisting of 10 squares.

CROSSREFS

Cf. A000577, A000104, A000105, A000228, A103465 - A103473, A103465, A120102, A120103.

Sequence in context: A234424 A234175 A234170 * A229378 A229370 A174154

Adjacent sequences:  A120101 A120102 A120103 * A120105 A120106 A120107

KEYWORD

nonn

AUTHOR

Sascha Kurz, Jun 09 2006

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 23 00:47 EDT 2022. Contains 353959 sequences. (Running on oeis4.)