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

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A303852 Number of pairs (lambda,mu) of partitions lambda of n and and mu of ceiling(n/2) with mu <= lambda (by diagram containment). 4
1, 1, 2, 4, 8, 13, 23, 42, 70, 114, 178, 313, 479, 759, 1119, 1858, 2687, 4207, 5960, 9468, 13203, 20198, 27728, 42955, 58293, 87333, 117084, 176706, 234579, 346450, 455637, 673619, 878603, 1276936, 1652382, 2404288, 3089769, 4429895, 5654741, 8105634 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..200

Eric Weisstein's World of Mathematics, Ferrers Diagram

Wikipedia, Ferrers diagram

FORMULA

a(n) = A259478(n,ceiling(n/2)).

CROSSREFS

Bisections give: A303861 (even part), A303863 (odd part).

Cf. A259478.

Sequence in context: A164417 A258600 A227232 * A096573 A227910 A000077

Adjacent sequences:  A303849 A303850 A303851 * A303853 A303854 A303855

KEYWORD

nonn

AUTHOR

Alois P. Heinz, May 01 2018

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 January 20 04:21 EST 2019. Contains 319323 sequences. (Running on oeis4.)