|
Search: id:A006420
|
|
|
| A006420 |
|
Number of rooted planar maps.
(Formerly M5012)
|
|
+0
1
|
|
| 1, 16, 150, 1104, 7077, 41504, 228810, 1205520, 6135690, 30391520, 147277676, 700990752
(list; graph; listen)
|
|
|
OFFSET
|
2,2
|
|
|
REFERENCES
|
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Walsh, T. R. S.; Lehman, A. B.; Counting rooted maps by genus. III: Nonseparable maps. J. Combinatorial Theory Ser. B 18 (1975), 222-259.
|
|
CROSSREFS
|
Sequence in context: A155657 A135458 A000486 this_sequence A049351 A023014 A073384
Adjacent sequences: A006417 A006418 A006419 this_sequence A006421 A006422 A006423
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
Search completed in 0.002 seconds
|
