login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A255953 Number of collections of nonempty multisets with a total of n+3 objects of exactly n colors. 2
0, 5, 56, 492, 3936, 30710, 240012, 1904301, 15446672, 128576019, 1100414420, 9692024727, 87872444424, 820015945853, 7873581959208, 77748058644050, 789084769234176, 8226289694091564, 88033961164032132, 966450255695509761, 10877046448539404200 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Alois P. Heinz, Table of n, a(n) for n = 0..250

FORMULA

a(n) = A255903(n+3,n).

EXAMPLE

a(1) = 5: {{1},{1},{1},{1}}, {{1},{1},{1,1}}, {{1,1},{1,1}}, {{1},{1,1,1}}, {{1,1,1,1}}.

CROSSREFS

A diagonal of A255903.

Sequence in context: A247710 A247774 A258490 * A174249 A073563 A006658

Adjacent sequences:  A255950 A255951 A255952 * A255954 A255955 A255956

KEYWORD

nonn

AUTHOR

Alois P. Heinz, Mar 11 2015

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 23 16:32 EST 2021. Contains 340385 sequences. (Running on oeis4.)