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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A196991 Number of fixed polycairos with n cells. 0
4, 10, 32, 112, 412, 1572, 6148, 24494, 98992, 404650, 1669496, 6941226, 29047568, 122235518, 516860460 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

Eric Weisstein's World of Mathematics, Polycairo

CROSSREFS

Cf. A151534, A151535, A151536, A159866.

Sequence in context: A316103 A137954 A028283 * A151746 A110145 A185631

Adjacent sequences:  A196988 A196989 A196990 * A196992 A196993 A196994

KEYWORD

nonn,hard

AUTHOR

Joseph Myers, Oct 08 2011

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 April 4 21:43 EDT 2020. Contains 333238 sequences. (Running on oeis4.)