Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A166763
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A166763 Number of nX3 1..4 arrays containing at least one of each value, and all equal values connected. +0
1
0, 504, 10560, 103800, 671448, 3348840, 14014320, 51729072, 173858832, 543596760, 1605266976, 4526990088, 12293408616 (list; graph; listen)
OFFSET

1,2

EXAMPLE

Some solutions for n=3

...1.1.1...3.1.1...2.2.3...3.4.1...1.4.2...1.1.1...1.1.2...2.2.3...1.2.4

...2.4.1...1.1.4...1.2.3...3.4.1...1.2.2...1.1.2...4.1.1...1.4.3...1.1.1

...3.4.4...2.4.4...4.2.3...3.2.1...3.3.2...4.3.2...1.1.3...1.3.3...1.3.1

------

...3.3.3...1.2.2...2.1.1...3.3.1...4.4.4...4.4.4...3.3.2...2.3.3...3.3.3

...4.4.1...1.2.4...4.1.1...1.1.1...2.2.1...3.2.4...3.4.2...2.2.1...4.4.1

...2.1.1...3.3.4...3.3.3...4.2.2...2.3.1...3.2.1...3.4.1...4.2.2...4.2.1

CROSSREFS

Sequence in context: A161005 A061124 A141145 this_sequence A012829 A013973 A012744

Adjacent sequences: A166760 A166761 A166762 this_sequence A166764 A166765 A166766

KEYWORD

nonn

AUTHOR

Ron Hardin (rhhardin(AT)att.net) Oct 21 2009

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


AT&T Labs Research