login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A056769 Puzzle 2, related to polyominoes. 0
1, 9, 64, 601, 5616 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

From Vicher's table.

LINKS

Table of n, a(n) for n=0..4.

M. Keller, Counting Polyforms

M. Vicher, Polyforms

CROSSREFS

Sequence in context: A037540 A037484 A013566 * A273232 A064546 A217872

Adjacent sequences:  A056766 A056767 A056768 * A056770 A056771 A056772

KEYWORD

nonn

AUTHOR

James A. Sellers, Aug 28 2000

EXTENSIONS

Edited by T. D. Noe, Apr 09 2009

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 16 00:50 EDT 2018. Contains 316252 sequences. (Running on oeis4.)