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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A193057 Number of size n nonnegative integer arrays with new values introduced in increasing order from 0, and no 2 consecutive elements totalling n or more 1
1, 2, 4, 13, 43, 179, 754, 3752, 18910, 107947, 626797, 4007984, 26177428, 184572504, 1333510143, 10251720776, 80925610461, 672581036971, 5745786626079, 51276472540865, 470474128209758, 4483074757033617, 43904371855787890 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for n=8

..0....0....0....0....0....0....0....0....0....0....0....0....0....0....0....0

..1....1....1....1....1....1....1....1....0....0....1....1....1....0....1....1

..2....2....2....1....2....2....2....0....0....1....2....2....1....1....1....2

..3....3....2....1....2....3....1....0....1....2....3....0....0....1....0....2

..1....2....1....0....2....1....1....2....0....3....3....3....0....0....2....1

..3....2....1....1....1....1....0....1....2....1....4....0....0....1....1....3

..4....3....2....2....2....1....0....3....1....3....0....3....1....1....3....0

..1....4....3....0....1....3....1....3....0....0....4....0....1....0....0....3

CROSSREFS

Sequence in context: A050624 A135501 A001548 * A115600 A007858 A153930

Adjacent sequences:  A193054 A193055 A193056 * A193058 A193059 A193060

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 15 2011

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified November 26 05:57 EST 2014. Contains 250020 sequences.