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!)
A239921 Number of unrooted maps with n edges of (orientable) genus 7. 3
508233789579, 104295987346126, 11269592389125547, 852994611088758224, 50777879440443305426, 2531246455428148382456, 109880399953287962099588, 4265557888300762164284822, 150940131172496245801920542 (list; graph; refs; listen; history; text; internal format)
OFFSET

14,1

LINKS

Table of n, a(n) for n=14..22.

Timothy R. S. Walsh, Alain Giorgetti, Alexander Mednykh, Enumeration of unrooted orientable maps of arbitrary genus by number of edges and vertices, Discrete Math. 312 (2012), no. 17, 2660--2671. MR2935417

CROSSREFS

Cf. A238357.

Cf. A006386, A104595, A104596, A215019, A239918, A239919.

Sequence in context: A289111 A209833 A255578 * A250867 A104303 A306500

Adjacent sequences:  A239918 A239919 A239920 * A239922 A239923 A239924

KEYWORD

nonn

AUTHOR

Alain Giorgetti, Mar 29 2014

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 July 8 07:34 EDT 2020. Contains 335513 sequences. (Running on oeis4.)