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

 

Logo

Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing.
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A089300 Number of planar partitions of n (A000219) that are non-squashing along rows and down columns (cf. A018819). 2
1, 1, 3, 4, 9, 13, 25, 33, 56, 76, 122, 170, 264, 360, 538, 707, 1002, 1332, 1853, 2409, 3294 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..20.

N. J. A. Sloane and J. A. Sellers, On non-squashing partitions, Discrete Math., 294 (2005), 259-274.

EXAMPLE

E.g. a(4) = 9:

4.31.3.22.2.211.21..2..11

.....1....2.....1...1..11

....................1....

CROSSREFS

Cf. A000219, A000123, A018819, A008763, A001970, A089292.

Sequence in context: A326981 A124285 A131326 * A250111 A079284 A000624

Adjacent sequences:  A089297 A089298 A089299 * A089301 A089302 A089303

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Dec 25 2003

EXTENSIONS

More terms from Wouter Meeussen, Dec 30 2003

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 December 9 13:50 EST 2019. Contains 329877 sequences. (Running on oeis4.)