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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A055534 Number of labeled order relations on n nodes in which longest chain has n-2 nodes. 0
1, 86, 2310, 42960, 712320, 11481120 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,2

REFERENCES

L. Comtet, Advanced Combinatorics, Reidel, 1974, p. 60.

LINKS

Table of n, a(n) for n=3..8.

CROSSREFS

A column or diagonal of triangle in A008285.

Sequence in context: A224054 A224307 A224371 * A230783 A017802 A035738

Adjacent sequences:  A055531 A055532 A055533 * A055535 A055536 A055537

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 10 2000

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 23 12:10 EDT 2018. Contains 316527 sequences. (Running on oeis4.)